diff --git a/.github/component_owners.yml b/.github/component_owners.yml
index 286a5a13fc..d0be8ed75b 100644
--- a/.github/component_owners.yml
+++ b/.github/component_owners.yml
@@ -23,6 +23,8 @@ components:
     - johnnyshields
   instrumentation/racecar:
     - chrisholmes
+  instrumentation/rage:
+    - rsamoilov
   instrumentation/rspec:
     - chrisholmes
   instrumentation/que:
diff --git a/.github/workflows/ci-instrumentation-full.yml b/.github/workflows/ci-instrumentation-full.yml
index 5f0dce4378..d2179ced24 100644
--- a/.github/workflows/ci-instrumentation-full.yml
+++ b/.github/workflows/ci-instrumentation-full.yml
@@ -37,6 +37,7 @@ on:
       - 'instrumentation/logger/**'
       - 'instrumentation/net_http/**'
       - 'instrumentation/rack/**'
+      - 'instrumentation/rage/**'
       - 'instrumentation/rails/**'
       - 'instrumentation/restclient/**'
       - 'instrumentation/rspec/**'
@@ -97,6 +98,7 @@ jobs:
           - logger
           - net_http
           - rack
+          - rage
           - rails
           - restclient
           - rspec
@@ -147,6 +149,7 @@ jobs:
           [[ "${{ matrix.gem }}" == "koala"                    ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "lmdb"                     ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "rack"                     ]] && echo "skip=true" >> $GITHUB_OUTPUT
+          [[ "${{ matrix.gem }}" == "rage"                     ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "rails"                    ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "grpc"                     ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "gruf"                     ]] && echo "skip=true" >> $GITHUB_OUTPUT
diff --git a/.toys/.data/releases.yml b/.toys/.data/releases.yml
index ac110d17c4..f2a02795a1 100644
--- a/.toys/.data/releases.yml
+++ b/.toys/.data/releases.yml
@@ -221,6 +221,10 @@ gems:
     directory: instrumentation/rack
     version_constant: [OpenTelemetry, Instrumentation, Rack, VERSION]
 
+  - name: opentelemetry-instrumentation-rage
+    directory: instrumentation/rage
+    version_constant: [OpenTelemetry, Instrumentation, Rage, VERSION]
+
   - name: opentelemetry-instrumentation-rails
     directory: instrumentation/rails
     version_constant: [OpenTelemetry, Instrumentation, Rails, VERSION]
@@ -295,4 +299,4 @@ gems:
 
   - name: opentelemetry-sampler-xray
     directory: sampler/xray
-    version_constant: [OpenTelemetry, Sampler, XRay, VERSION]
\ No newline at end of file
+    version_constant: [OpenTelemetry, Sampler, XRay, VERSION]
diff --git a/instrumentation/rage/.rubocop.yml b/instrumentation/rage/.rubocop.yml
new file mode 100644
index 0000000000..1248a2f825
--- /dev/null
+++ b/instrumentation/rage/.rubocop.yml
@@ -0,0 +1 @@
+inherit_from: ../../.rubocop.yml
diff --git a/instrumentation/rage/.yardopts b/instrumentation/rage/.yardopts
new file mode 100644
index 0000000000..97ec84cf97
--- /dev/null
+++ b/instrumentation/rage/.yardopts
@@ -0,0 +1,9 @@
+--no-private
+--title=OpenTelemetry Rage Instrumentation
+--markup=markdown
+--main=README.md
+./lib/opentelemetry/instrumentation/**/*.rb
+./lib/opentelemetry/instrumentation.rb
+-
+README.md
+CHANGELOG.md
diff --git a/instrumentation/rage/Appraisals b/instrumentation/rage/Appraisals
new file mode 100644
index 0000000000..5eda89af12
--- /dev/null
+++ b/instrumentation/rage/Appraisals
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+appraise 'rage-1.0' do
+  gem 'rage-rb', github: 'rage-rb/rage', branch: 'main'
+end
diff --git a/instrumentation/rage/CHANGELOG.md b/instrumentation/rage/CHANGELOG.md
new file mode 100644
index 0000000000..cbc891876a
--- /dev/null
+++ b/instrumentation/rage/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Release History: opentelemetry-instrumentation-rage
+
+### v0.1.0 / 2026-01-04
+
+Initial release.
diff --git a/instrumentation/rage/Gemfile b/instrumentation/rage/Gemfile
new file mode 100644
index 0000000000..14ac2c87dc
--- /dev/null
+++ b/instrumentation/rage/Gemfile
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+source 'https://rubygems.org'
+
+gemspec
+
+group :test do
+  gem 'opentelemetry-instrumentation-base', path: '../base'
+  gem 'opentelemetry-instrumentation-rack', path: '../rack'
+  gem 'appraisal', '~> 2.5'
+  gem 'bundler', '~> 2.4'
+  gem 'minitest', '~> 5.0'
+  gem 'opentelemetry-sdk', '~> 1.0'
+  gem 'opentelemetry-test-helpers', '~> 0.3'
+  gem 'rake', '~> 13.0'
+  gem 'rubocop', '~> 1.81.1'
+  gem 'rubocop-performance', '~> 1.26.0'
+  gem 'simplecov', '~> 0.17.1'
+  gem 'webmock', '~> 3.24'
+  gem 'yard', '~> 0.9'
+  gem 'rspec-mocks'
+end
diff --git a/instrumentation/rage/LICENSE b/instrumentation/rage/LICENSE
new file mode 100644
index 0000000000..1ef7dad2c5
--- /dev/null
+++ b/instrumentation/rage/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
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+
+      "Legal Entity" shall mean the union of the acting entity and all
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+
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+      "Contribution" shall mean any work of authorship, including
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+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
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+      file or class name and description of purpose be included on the
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+
+   Copyright The OpenTelemetry Authors
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
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+   See the License for the specific language governing permissions and
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diff --git a/instrumentation/rage/README.md b/instrumentation/rage/README.md
new file mode 100644
index 0000000000..1463713a13
--- /dev/null
+++ b/instrumentation/rage/README.md
@@ -0,0 +1,59 @@
+# OpenTelemetry Rage Instrumentation
+
+The OpenTelemetry Rage instrumentation provides automatic observability for [Rage](https://github.com/rage-rb/rage), a fiber-based framework with Rails-compatible syntax.
+
+This instrumentation enables comprehensive tracing and logging for Rage applications:
+
+* Creates spans for HTTP requests, WebSocket messages, event subscribers, and deferred tasks
+* Propagates OpenTelemetry context across fibers created via `Fiber.schedule` and deferred tasks
+* Enriches logs with trace and span IDs for correlated observability
+
+## How do I get started?
+
+Install the gem using:
+
+```console
+gem install opentelemetry-instrumentation-rage
+```
+
+Or, if you use [bundler][bundler-home], include `opentelemetry-instrumentation-rage` in your `Gemfile`.
+
+## Usage
+
+To use the instrumentation, call `use` with the name of the instrumentation:
+
+```ruby
+OpenTelemetry::SDK.configure do |c|
+  c.use 'OpenTelemetry::Instrumentation::Rage'
+end
+```
+
+Alternatively, you can also call `use_all` to install all the available instrumentation.
+
+```ruby
+OpenTelemetry::SDK.configure do |c|
+  c.use_all
+end
+```
+
+## Examples
+
+Example usage can be seen in the [`./example/trace_demonstration.ru` file](https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/instrumentation/rage/example/trace_demonstration.ru)
+
+## How can I get involved?
+
+The `opentelemetry-instrumentation-rage` gem source is [on github][repo-github], along with related gems including `opentelemetry-api` and `opentelemetry-sdk`.
+
+The OpenTelemetry Ruby gems are maintained by the OpenTelemetry Ruby special interest group (SIG). You can get involved by joining us on our [GitHub Discussions][discussions-url], [Slack Channel][slack-channel] or attending our weekly meeting. See the [meeting calendar][community-meetings] for dates and times. For more information on this and other language SIGs, see the OpenTelemetry [community page][ruby-sig].
+
+## License
+
+The `opentelemetry-instrumentation-rage` gem is distributed under the Apache 2.0 license. See [LICENSE][license-github] for more information.
+
+[bundler-home]: https://bundler.io
+[repo-github]: https://github.com/open-telemetry/opentelemetry-ruby
+[license-github]: https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/LICENSE
+[ruby-sig]: https://github.com/open-telemetry/community#ruby-sig
+[community-meetings]: https://github.com/open-telemetry/community#community-meetings
+[slack-channel]: https://cloud-native.slack.com/archives/C01NWKKMKMY
+[discussions-url]: https://github.com/open-telemetry/opentelemetry-ruby/discussions
diff --git a/instrumentation/rage/Rakefile b/instrumentation/rage/Rakefile
new file mode 100644
index 0000000000..1a64ba842e
--- /dev/null
+++ b/instrumentation/rage/Rakefile
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'bundler/gem_tasks'
+require 'rake/testtask'
+require 'yard'
+require 'rubocop/rake_task'
+
+RuboCop::RakeTask.new
+
+Rake::TestTask.new :test do |t|
+  t.libs << 'test'
+  t.libs << 'lib'
+  t.test_files = FileList['test/**/*_test.rb']
+end
+
+YARD::Rake::YardocTask.new do |t|
+  t.stats_options = ['--list-undoc']
+end
+
+if RUBY_ENGINE == 'truffleruby'
+  task default: %i[test]
+else
+  task default: %i[test rubocop yard]
+end
diff --git a/instrumentation/rage/example/trace_demonstration.ru b/instrumentation/rage/example/trace_demonstration.ru
new file mode 100644
index 0000000000..1b4c100dd9
--- /dev/null
+++ b/instrumentation/rage/example/trace_demonstration.ru
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'bundler/inline'
+
+gemfile(true) do
+  source 'https://rubygems.org'
+
+  gem 'rage-rb'
+  gem 'opentelemetry-sdk'
+  gem 'opentelemetry-instrumentation-rage'
+end
+
+require 'rage/all'
+
+ENV['OTEL_TRACES_EXPORTER'] ||= 'console'
+
+OpenTelemetry::SDK.configure do |c|
+  c.use 'OpenTelemetry::Instrumentation::Rage'
+end
+
+class BaseController < RageController::API
+  def index
+    render plain: "Hello from OpenTelemetry!"
+  end
+end
+
+Rage.routes.draw do
+  root to: "base#index"
+end
+
+run Rage.application
+
+# To run this example:
+# 1. Install the `rage-rb` gem:
+#   gem install rage-rb
+# 2. Start the server:
+#   rage s -c trace_demonstration.ru
+# 3. Navigate to http://localhost:3000/
+# Spans for the requests will appear in the console
diff --git a/instrumentation/rage/lib/opentelemetry-instrumentation-rage.rb b/instrumentation/rage/lib/opentelemetry-instrumentation-rage.rb
new file mode 100644
index 0000000000..c034f140f8
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry-instrumentation-rage.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require_relative 'opentelemetry/instrumentation'
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation.rb b/instrumentation/rage/lib/opentelemetry/instrumentation.rb
new file mode 100644
index 0000000000..824ab13d6d
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+# OpenTelemetry is an open source observability framework, providing a
+# general-purpose API, SDK, and related tools required for the instrumentation
+# of cloud-native software, frameworks, and libraries.
+#
+# The OpenTelemetry module provides global accessors for telemetry objects.
+# See the documentation for the `opentelemetry-api` gem for details.
+module OpenTelemetry
+  # Instrumentation should be able to handle the case when the library is not installed on a user's system.
+  module Instrumentation
+  end
+end
+
+require 'opentelemetry-instrumentation-rack'
+require_relative 'instrumentation/rage'
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage.rb
new file mode 100644
index 0000000000..d2437856f1
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'opentelemetry'
+require 'opentelemetry-instrumentation-base'
+
+module OpenTelemetry
+  module Instrumentation
+    # Contains the OpenTelemetry instrumentation for the Rage gem
+    module Rage
+    end
+  end
+end
+
+require_relative 'rage/instrumentation'
+require_relative 'rage/version'
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/cable.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/cable.rb
new file mode 100644
index 0000000000..54c3ee1a71
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/cable.rb
@@ -0,0 +1,148 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'opentelemetry/semconv/incubating/code'
+require 'opentelemetry/semconv/incubating/messaging'
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      module Handlers
+        # The class customizes the initial Rack span used for WebSocket handshakes and wraps subsequent
+        # Cable connection and action processing in spans linked to the handshake span.
+        class Cable < ::Rage::Telemetry::Handler
+          HANDSHAKE_CONTEXT = 'otel.rage.handshake_context'
+          private_constant :HANDSHAKE_CONTEXT
+
+          HANDSHAKE_LINK = 'otel.rage.handshake_link'
+          private_constant :HANDSHAKE_LINK
+
+          handle 'cable.websocket.handshake', with: :save_context
+
+          handle 'cable.connection.process', with: :create_connection_span
+          handle 'cable.action.process', with: :create_channel_span
+          handle 'cable.stream.broadcast', with: :create_broadcast_span
+
+          # @param env [Hash] the Rack env
+          def self.save_context(env:)
+            span = OpenTelemetry::Instrumentation::Rack.current_span
+            return yield unless span.recording?
+
+            request = ::Rack::Request.new(env)
+            span.name = "#{request.request_method} #{request.path}"
+
+            env[HANDSHAKE_CONTEXT] = OpenTelemetry::Context.current
+            env[HANDSHAKE_LINK] = [OpenTelemetry::Trace::Link.new(span.context)]
+
+            yield
+          end
+
+          # @param env [Hash] the Rack env
+          # @param action [:connect, :disconnect] the name of the action being processed
+          # @param connection [Rage::Cable::Connection] the connection instance
+          def self.create_connection_span(env:, action:, connection:)
+            handshake_context = env[HANDSHAKE_CONTEXT]
+            handshake_link = env[HANDSHAKE_LINK]
+
+            OpenTelemetry::Context.with_current(handshake_context) do
+              attributes = {
+                'websocket.framework' => 'rage.cable',
+                'websocket.direction' => 'inbound',
+                'websocket.handler' => connection.class.name,
+                'websocket.action' => action.to_s
+              }
+
+              kind = action == :connect ? :server : :internal
+
+              span = Rage::Instrumentation.instance.tracer.start_root_span(
+                "#{connection.class} #{action}",
+                links: handshake_link,
+                kind:,
+                attributes:
+              )
+
+              OpenTelemetry::Trace.with_span(span) do
+                result = yield
+
+                if result.error?
+                  span.record_exception(result.exception)
+                  span.status = OpenTelemetry::Trace::Status.error
+                end
+              ensure
+                span.finish
+              end
+            end
+          end
+
+          # @param env [Hash] the Rack env
+          # @param action [Symbol] the name of the action being processed
+          # @param channel [Rage::Cable::Channel] the channel instance
+          def self.create_channel_span(env:, action:, channel:)
+            handshake_context = env[HANDSHAKE_CONTEXT]
+            handshake_link = env[HANDSHAKE_LINK]
+
+            OpenTelemetry::Context.with_current(handshake_context) do
+              attributes = {
+                'websocket.framework' => 'rage.cable',
+                'websocket.direction' => 'inbound',
+                'websocket.channel' => channel.class.name,
+                'websocket.action' => action.to_s
+              }
+
+              attributes[SemConv::Incubating::MESSAGING::MESSAGING_OPERATION_TYPE] = 'process' unless action == :unsubscribed
+
+              span_name = if action == :subscribed
+                            "#{channel.class} subscribe"
+                          elsif action == :unsubscribed
+                            "#{channel.class} unsubscribe"
+                          else
+                            "#{channel.class} receive"
+                          end
+
+              kind = action == :unsubscribed ? :internal : :server
+
+              span = Rage::Instrumentation.instance.tracer.start_root_span(
+                span_name,
+                links: handshake_link,
+                kind:,
+                attributes:
+              )
+
+              OpenTelemetry::Trace.with_span(span) do
+                result = yield
+
+                if result.error?
+                  span.record_exception(result.exception)
+                  span.status = OpenTelemetry::Trace::Status.error
+                end
+              ensure
+                span.finish
+              end
+            end
+          end
+
+          # @param stream [String] the name of the stream
+          def self.create_broadcast_span(stream:)
+            attributes = {
+              'websocket.framework' => 'rage.cable',
+              'websocket.direction' => 'outbound',
+              'websocket.stream' => stream
+            }
+
+            Rage::Instrumentation.instance.tracer.in_span('Rage::Cable broadcast', kind: :producer, attributes:) do |span|
+              result = yield
+
+              if result.error?
+                span.record_exception(result.exception)
+                span.status = OpenTelemetry::Trace::Status.error
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/deferred.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/deferred.rb
new file mode 100644
index 0000000000..ca663e83fe
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/deferred.rb
@@ -0,0 +1,75 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'opentelemetry/semconv/incubating/code'
+require 'opentelemetry/semconv/incubating/messaging'
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      module Handlers
+        # The class propagates OpenTelemetry context to deferred tasks and wraps the
+        # enqueuing and processing of deferred tasks in spans.
+        class Deferred < ::Rage::Telemetry::Handler
+          handle 'deferred.task.enqueue', with: :create_enqueue_span
+          handle 'deferred.task.process', with: :create_perform_span
+
+          # @param task_class [Class] the class of the deferred task
+          # @param task_context [Hash] the context for the deferred task
+          def self.create_enqueue_span(task_class:, task_context:)
+            Rage::Instrumentation.instance.tracer.in_span("#{task_class} enqueue", kind: :producer) do |span|
+              OpenTelemetry.propagation.inject(task_context)
+
+              result = yield
+
+              if result.error?
+                span.record_exception(result.exception)
+                span.status = OpenTelemetry::Trace::Status.error
+              end
+            end
+          end
+
+          # @param task_class [Class] the class of the deferred task
+          # @param task [Rage::Deferred::Task] the deferred task instance
+          # @param task_context [Hash] the context for the deferred task
+          def self.create_perform_span(task_class:, task:, task_context:)
+            otel_context = OpenTelemetry.propagation.extract(task_context)
+
+            OpenTelemetry::Context.with_current(otel_context) do
+              attributes = {
+                'workflow.platform.name' => 'rage.deferred',
+                'workflow.execution.result' => 'success',
+                'workflow.execution.attempt' => task.meta.attempts
+              }
+
+              parent_span_context = OpenTelemetry::Trace.current_span(otel_context).context
+              links = [OpenTelemetry::Trace::Link.new(parent_span_context)] if parent_span_context.valid?
+
+              span = Rage::Instrumentation.instance.tracer.start_root_span(
+                "#{task_class} perform",
+                attributes:,
+                links:,
+                kind: :consumer
+              )
+
+              OpenTelemetry::Trace.with_span(span) do
+                result = yield
+
+                if result.error?
+                  span.set_attribute('workflow.execution.result', 'failure')
+                  span.record_exception(result.exception)
+                  span.status = OpenTelemetry::Trace::Status.error
+                end
+              ensure
+                span.finish
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/events.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/events.rb
new file mode 100644
index 0000000000..0f9ce0c6b1
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/events.rb
@@ -0,0 +1,60 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'opentelemetry/semconv/incubating/code'
+require 'opentelemetry/semconv/incubating/messaging'
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      module Handlers
+        # The class records the publishing of Rage events and wraps event subscribers in spans.
+        class Events < ::Rage::Telemetry::Handler
+          handle 'events.event.publish', with: :create_publisher_span
+          handle 'events.subscriber.process', with: :create_subscriber_span
+
+          # @param event [Object] the event being published
+          def self.create_publisher_span(event:, &)
+            current_span = OpenTelemetry::Trace.current_span
+            return yield unless current_span.recording?
+
+            kind = :producer
+            attributes = {
+              SemConv::Incubating::MESSAGING::MESSAGING_SYSTEM => 'rage.events',
+              SemConv::Incubating::MESSAGING::MESSAGING_OPERATION_TYPE => 'send',
+              SemConv::Incubating::MESSAGING::MESSAGING_DESTINATION_NAME => event.class.name
+            }
+
+            Rage::Instrumentation.instance.tracer.in_span("#{event.class} publish", kind:, attributes:, &)
+          end
+
+          # @param event [Object] the event being processed
+          # @param subscriber [Rage::Events::Subscriber] the subscriber processing the event
+          def self.create_subscriber_span(event:, subscriber:)
+            # deferred subscribers will be wrapped into spans by the `Handlers::Deferred` handler
+            return yield if subscriber.class.deferred?
+
+            kind = :consumer
+            attributes = {
+              SemConv::Incubating::MESSAGING::MESSAGING_SYSTEM => 'rage.events',
+              SemConv::Incubating::MESSAGING::MESSAGING_OPERATION_TYPE => 'process',
+              SemConv::Incubating::MESSAGING::MESSAGING_DESTINATION_NAME => event.class.name
+            }
+
+            Rage::Instrumentation.instance.tracer.in_span("#{subscriber.class} process", kind:, attributes:) do |span|
+              result = yield
+
+              if result.error?
+                span.record_exception(result.exception)
+                span.status = OpenTelemetry::Trace::Status.error
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/fiber.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/fiber.rb
new file mode 100644
index 0000000000..470197cb3b
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/fiber.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      module Handlers
+        # The class uses Fiber storage to propagate OpenTelemetry context between fibers.
+        class Fiber < ::Rage::Telemetry::Handler
+          # Save the current OpenTelemetry context into Fiber local storage.
+          # Application-level fibers spawned via `Fiber.schedule` will automatically inherit the storage.
+          module Patch
+            def schedule(&)
+              ::Fiber[:__rage_otel_context] = OpenTelemetry::Context.current
+              super
+            end
+          end
+
+          def initialize
+            super
+            ::Fiber.singleton_class.prepend(Patch)
+          end
+
+          handle 'core.fiber.spawn', with: :propagate_otel_context
+
+          def propagate_otel_context(&)
+            OpenTelemetry::Context.with_current(::Fiber[:__rage_otel_context], &)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/request.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/request.rb
new file mode 100644
index 0000000000..40a9b072b1
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/handlers/request.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'opentelemetry/semconv/http'
+require 'opentelemetry/semconv/incubating/code'
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      module Handlers
+        # The class updates the name of the Rack span, adds relevant attributes, and records
+        # exceptions if any occur during the processing of a controller action.
+        class Request < ::Rage::Telemetry::Handler
+          handle 'controller.action.process', with: :enrich_request_span
+
+          # @param controller [RageController::API] the controller processing the request
+          # @param request [Rage::Request] the request being processed
+          def self.enrich_request_span(controller:, request:)
+            span = OpenTelemetry::Instrumentation::Rack.current_span
+            return yield unless span.recording?
+
+            http_route = request.route_uri_pattern
+            span.name = "#{request.method} #{http_route}"
+            span.set_attribute(SemConv::HTTP::HTTP_ROUTE, http_route)
+
+            result = yield
+            return unless result.error?
+
+            span.record_exception(result.exception)
+            span.status = OpenTelemetry::Trace::Status.error
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/instrumentation.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/instrumentation.rb
new file mode 100644
index 0000000000..adfa6cb7da
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/instrumentation.rb
@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      # The Instrumentation class contains logic to detect and install the Rage instrumentation
+      class Instrumentation < OpenTelemetry::Instrumentation::Base
+        install do |_config|
+          unless OpenTelemetry::Instrumentation::Rack::Instrumentation.instance.installed?
+            ENV['OTEL_SEMCONV_STABILITY_OPT_IN'] ||= 'http'
+            OpenTelemetry::Instrumentation::Rack::Instrumentation.instance.install({ use_rack_events: false })
+          end
+
+          require_dependencies
+          install_instrumentation
+        end
+
+        present do
+          defined?(::Rage)
+        end
+
+        compatible do
+          is_compatible = gem_version >= Gem::Version.new('1.20.0') && gem_version < Gem::Version.new('2')
+          OpenTelemetry.logger.warn("Rage version #{::Rage::VERSION} is not supported by the OpenTelemetry Rage instrumentation. Supported versions are >= 1.20.0 and < 2.0.0.") unless is_compatible
+
+          is_compatible
+        end
+
+        private
+
+        def gem_version
+          Gem::Version.new(::Rage::VERSION)
+        end
+
+        def require_dependencies
+          require_relative 'log_context'
+
+          require_relative 'handlers/cable'
+          require_relative 'handlers/deferred'
+          require_relative 'handlers/events'
+          require_relative 'handlers/fiber'
+          require_relative 'handlers/request'
+        end
+
+        def install_instrumentation
+          ::Rage.configure do
+            # install Rack middleware that creates spans for incoming requests
+            config.middleware.insert_after(0, *OpenTelemetry::Instrumentation::Rack::Instrumentation.instance.middleware_args)
+
+            # install telemetry handler to update request span name and attributes
+            config.telemetry.use Handlers::Request
+
+            # install telemetry handler to propagate context to application-level fibers
+            config.telemetry.use Handlers::Fiber.new
+
+            # install telemetry handlers for Rage components
+            config.telemetry.use Handlers::Cable
+            config.telemetry.use Handlers::Deferred
+            config.telemetry.use Handlers::Events
+
+            # install log context to add tracing info to logs
+            config.log_context << LogContext
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/log_context.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/log_context.rb
new file mode 100644
index 0000000000..115c992122
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/log_context.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      # The class provides a custom log context to enrich Rage logs with
+      # the current OpenTelemetry trace and span IDs.
+      class LogContext
+        class << self
+          def call
+            current_span = OpenTelemetry::Trace.current_span
+            return unless current_span.recording?
+
+            {
+              trace_id: current_span.context.hex_trace_id,
+              span_id: current_span.context.hex_span_id
+            }
+          rescue StandardError => e
+            OpenTelemetry.handle_error(exception: e)
+            nil
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/lib/opentelemetry/instrumentation/rage/version.rb b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/version.rb
new file mode 100644
index 0000000000..a23097b1e4
--- /dev/null
+++ b/instrumentation/rage/lib/opentelemetry/instrumentation/rage/version.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module OpenTelemetry
+  module Instrumentation
+    module Rage
+      VERSION = '0.1.0'
+    end
+  end
+end
diff --git a/instrumentation/rage/opentelemetry-instrumentation-rage.gemspec b/instrumentation/rage/opentelemetry-instrumentation-rage.gemspec
new file mode 100644
index 0000000000..01ab4b021c
--- /dev/null
+++ b/instrumentation/rage/opentelemetry-instrumentation-rage.gemspec
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+lib = File.expand_path('lib', __dir__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'opentelemetry/instrumentation/rage/version'
+
+Gem::Specification.new do |spec|
+  spec.name        = 'opentelemetry-instrumentation-rage'
+  spec.version     = OpenTelemetry::Instrumentation::Rage::VERSION
+  spec.authors     = ['OpenTelemetry Authors']
+  spec.email       = ['cncf-opentelemetry-contributors@lists.cncf.io']
+
+  spec.summary     = 'Rage instrumentation for the OpenTelemetry framework'
+  spec.description = 'Rage instrumentation for the OpenTelemetry framework'
+  spec.homepage    = 'https://github.com/open-telemetry/opentelemetry-ruby-contrib'
+  spec.license     = 'Apache-2.0'
+
+  spec.files = Dir.glob('lib/**/*.rb') +
+               Dir.glob('*.md') +
+               ['LICENSE', '.yardopts']
+  spec.require_paths = ['lib']
+  spec.required_ruby_version = '>= 3.2'
+
+  spec.add_dependency 'opentelemetry-instrumentation-rack', '~> 0.29'
+  spec.add_dependency 'opentelemetry-semantic_conventions', '>= 1.36.0'
+
+  if spec.respond_to?(:metadata)
+    spec.metadata['changelog_uri'] = "https://rubydoc.info/gems/#{spec.name}/#{spec.version}/file/CHANGELOG.md"
+    spec.metadata['source_code_uri'] = 'https://github.com/open-telemetry/opentelemetry-ruby-contrib/tree/main/instrumentation/rage'
+    spec.metadata['bug_tracker_uri'] = 'https://github.com/open-telemetry/opentelemetry-ruby-contrib/issues'
+    spec.metadata['documentation_uri'] = "https://rubydoc.info/gems/#{spec.name}/#{spec.version}"
+  end
+end
diff --git a/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/cable_test.rb b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/cable_test.rb
new file mode 100644
index 0000000000..b6c8e203d9
--- /dev/null
+++ b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/cable_test.rb
@@ -0,0 +1,285 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage'
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage/handlers/cable'
+
+describe OpenTelemetry::Instrumentation::Rage::Handlers::Cable do
+  subject { OpenTelemetry::Instrumentation::Rage::Handlers::Cable }
+
+  let(:instrumentation) { OpenTelemetry::Instrumentation::Rage::Instrumentation.instance }
+
+  describe '.save_context' do
+    let(:env) { { 'REQUEST_METHOD' => 'POST', 'PATH_INFO' => '/cable' } }
+
+    describe 'with no active span' do
+      it 'does not change env' do
+        subject.save_context(env:) {}
+        _(env.size).must_equal(2)
+      end
+
+      it 'yields control' do
+        yielded = false
+
+        subject.save_context(env:) do
+          yielded = true
+        end
+
+        _(yielded).must_equal(true)
+      end
+    end
+
+    describe 'with active span' do
+      before { instrumentation.install({}) }
+      after { instrumentation.instance_variable_set(:@installed, false) }
+
+      it 'updates span name' do
+        instrumentation.tracer.in_span('test span') do |span|
+          context = OpenTelemetry::Instrumentation::Rack.context_with_span(span)
+
+          OpenTelemetry::Context.with_current(context) do
+            subject.save_context(env:) {}
+          end
+
+          _(span.name).must_equal('POST /cable')
+        end
+      end
+
+      it 'updates env' do
+        instrumentation.tracer.in_span('test span') do |span|
+          context = OpenTelemetry::Instrumentation::Rack.context_with_span(span)
+
+          OpenTelemetry::Context.with_current(context) do
+            subject.save_context(env:) {}
+          end
+
+          _(env['otel.rage.handshake_context']).must_equal(context)
+          _(env['otel.rage.handshake_link'].first).must_be_instance_of(OpenTelemetry::Trace::Link)
+        end
+      end
+
+      it 'yields control' do
+        instrumentation.tracer.in_span('test span') do |span|
+          context = OpenTelemetry::Instrumentation::Rack.context_with_span(span)
+          yielded = false
+
+          OpenTelemetry::Context.with_current(context) do
+            subject.save_context(env:) do
+              yielded = true
+            end
+          end
+
+          _(yielded).must_equal(true)
+        end
+      end
+    end
+  end
+
+  describe '.create_connection_span' do
+    let(:link) { OpenTelemetry::Trace::Link.new(OpenTelemetry::Trace::SpanContext.new) }
+    let(:env) { { 'otel.rage.handshake_link' => [link] } }
+    let(:action) { :my_action }
+    let(:connection_class) { Class.new }
+    let(:connection) { connection_class.new }
+    let(:result) { double(error?: false) }
+
+    let(:finished_spans) { EXPORTER.finished_spans }
+    let(:connection_span) { finished_spans.first }
+
+    before do
+      instrumentation.install({})
+      EXPORTER.reset
+      stub_const('MyConnection', connection_class)
+    end
+
+    after { instrumentation.instance_variable_set(:@installed, false) }
+
+    it 'creates a span' do
+      subject.create_connection_span(env:, action:, connection:) { result }
+
+      _(finished_spans.size).must_equal(1)
+
+      _(connection_span.name).must_equal('MyConnection my_action')
+      _(connection_span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+
+      _(connection_span.attributes['messaging.system']).must_equal('rage.cable')
+      _(connection_span.attributes['messaging.destination.name']).must_equal('MyConnection')
+      _(connection_span.attributes['code.function.name']).must_equal('MyConnection#my_action')
+
+      _(connection_span.links.first).must_equal(link)
+    end
+
+    describe 'with baggage' do
+      let(:context) { OpenTelemetry::Baggage.set_value('testing_baggage', 'it_worked') }
+      let(:env) { { 'otel.rage.handshake_context' => context } }
+
+      it 'propagates baggage' do
+        subject.create_connection_span(env:, action:, connection:) do
+          _(OpenTelemetry::Baggage.value('testing_baggage')).must_equal('it_worked')
+          result
+        end
+      end
+    end
+
+    describe 'with error' do
+      let(:result) { double(error?: true, exception: RuntimeError.new) }
+
+      it 'handles returned exceptions' do
+        subject.create_connection_span(env:, action:, connection:) { result }
+
+        _(connection_span.status.code).must_equal(OpenTelemetry::Trace::Status::ERROR)
+        _(connection_span.events.first.name).must_equal 'exception'
+        _(connection_span.events.first.attributes['exception.type']).must_equal 'RuntimeError'
+      end
+    end
+
+    describe 'with connect action' do
+      let(:action) { :connect }
+
+      it 'sets span kind to server' do
+        subject.create_connection_span(env:, action:, connection:) { result }
+        _(connection_span.kind).must_equal(:server)
+      end
+    end
+
+    describe 'with disconnect action' do
+      let(:action) { :disconnect }
+
+      it 'sets span kind to internal' do
+        subject.create_connection_span(env:, action:, connection:) { result }
+        _(connection_span.kind).must_equal(:internal)
+      end
+    end
+  end
+
+  describe '.create_channel_span' do
+    let(:link) { OpenTelemetry::Trace::Link.new(OpenTelemetry::Trace::SpanContext.new) }
+    let(:env) { { 'otel.rage.handshake_link' => [link] } }
+    let(:action) { :my_action }
+    let(:channel_class) { Class.new }
+    let(:channel) { channel_class.new }
+
+    let(:result) { double(error?: false) }
+
+    let(:finished_spans) { EXPORTER.finished_spans }
+    let(:channel_span) { finished_spans.first }
+
+    before do
+      instrumentation.install({})
+      EXPORTER.reset
+      stub_const('MyChannel', channel_class)
+    end
+
+    after { instrumentation.instance_variable_set(:@installed, false) }
+
+    it 'creates a span' do
+      subject.create_channel_span(env:, action:, channel:) { result }
+
+      _(finished_spans.size).must_equal(1)
+
+      _(channel_span.name).must_equal('MyChannel receive')
+      _(channel_span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+      _(channel_span.kind).must_equal(:server)
+
+      _(channel_span.attributes['messaging.system']).must_equal('rage.cable')
+      _(channel_span.attributes['messaging.destination.name']).must_equal('MyChannel')
+      _(channel_span.attributes['messaging.operation.type']).must_equal('receive')
+      _(channel_span.attributes['code.function.name']).must_equal('MyChannel#my_action')
+
+      _(channel_span.links.first).must_equal(link)
+    end
+
+    describe 'with baggage' do
+      let(:context) { OpenTelemetry::Baggage.set_value('testing_baggage', 'it_worked') }
+      let(:env) { { 'otel.rage.handshake_context' => context } }
+
+      it 'propagates baggage' do
+        subject.create_channel_span(env:, action:, channel:) do
+          _(OpenTelemetry::Baggage.value('testing_baggage')).must_equal('it_worked')
+          result
+        end
+      end
+    end
+
+    describe 'with error' do
+      let(:result) { double(error?: true, exception: RuntimeError.new) }
+
+      it 'handles returned exceptions' do
+        subject.create_channel_span(env:, action:, channel:) { result }
+
+        _(channel_span.status.code).must_equal(OpenTelemetry::Trace::Status::ERROR)
+        _(channel_span.events.first.name).must_equal 'exception'
+        _(channel_span.events.first.attributes['exception.type']).must_equal 'RuntimeError'
+      end
+    end
+
+    describe 'with subscribed action' do
+      let(:action) { :subscribed }
+
+      it 'sets span kind to server' do
+        subject.create_channel_span(env:, action:, channel:) { result }
+
+        _(channel_span.attributes['messaging.operation.type']).must_equal('receive')
+        _(channel_span.name).must_equal('MyChannel subscribe')
+        _(channel_span.kind).must_equal(:server)
+      end
+    end
+
+    describe 'with unsubscribed action' do
+      let(:action) { :unsubscribed }
+
+      it 'sets span kind to server' do
+        subject.create_channel_span(env:, action:, channel:) { result }
+
+        _(channel_span.attributes['messaging.operation.type']).must_be_nil
+        _(channel_span.name).must_equal('MyChannel unsubscribe')
+        _(channel_span.kind).must_equal(:internal)
+      end
+    end
+  end
+
+  describe '.create_broadcast_span' do
+    let(:result) { double(error?: false) }
+
+    let(:finished_spans) { EXPORTER.finished_spans }
+    let(:broadcast_span) { finished_spans.first }
+
+    before do
+      instrumentation.install({})
+      EXPORTER.reset
+    end
+
+    after { instrumentation.instance_variable_set(:@installed, false) }
+
+    it 'creates a span' do
+      subject.create_broadcast_span(stream: 'test-stream') { result }
+
+      _(finished_spans.size).must_equal(1)
+
+      _(broadcast_span.name).must_equal('Rage::Cable broadcast')
+      _(broadcast_span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+      _(broadcast_span.kind).must_equal(:producer)
+
+      _(broadcast_span.attributes['messaging.system']).must_equal('rage.cable')
+      _(broadcast_span.attributes['messaging.operation.type']).must_equal('publish')
+      _(broadcast_span.attributes['messaging.destination.name']).must_equal('test-stream')
+    end
+
+    describe 'with error' do
+      let(:result) { double(error?: true, exception: RuntimeError.new) }
+
+      it 'handles returned exceptions' do
+        subject.create_broadcast_span(stream: 'test-stream') { result }
+
+        _(broadcast_span.status.code).must_equal(OpenTelemetry::Trace::Status::ERROR)
+        _(broadcast_span.events.first.name).must_equal 'exception'
+        _(broadcast_span.events.first.attributes['exception.type']).must_equal 'RuntimeError'
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/deferred_test.rb b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/deferred_test.rb
new file mode 100644
index 0000000000..aef58f4d6f
--- /dev/null
+++ b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/deferred_test.rb
@@ -0,0 +1,149 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage'
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage/handlers/deferred'
+
+describe OpenTelemetry::Instrumentation::Rage::Handlers::Deferred do
+  subject { OpenTelemetry::Instrumentation::Rage::Handlers::Deferred }
+
+  let(:instrumentation) { OpenTelemetry::Instrumentation::Rage::Instrumentation.instance }
+
+  let(:task_class) { Class.new }
+  let(:task_context) { {} }
+
+  let(:result) { double(error?: false) }
+
+  let(:finished_spans) { EXPORTER.finished_spans }
+  let(:task_span) { finished_spans.first }
+
+  before do
+    instrumentation.install({})
+    EXPORTER.reset
+    stub_const('MyTask', task_class)
+  end
+
+  after { instrumentation.instance_variable_set(:@installed, false) }
+
+  describe '.create_enqueue_span' do
+    it 'creates a span' do
+      subject.create_enqueue_span(task_class:, task_context:) { result }
+
+      _(finished_spans.size).must_equal(1)
+
+      _(task_span.name).must_equal('MyTask enqueue')
+      _(task_span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+      _(task_span.kind).must_equal(:producer)
+
+      _(task_span.attributes['messaging.system']).must_equal('rage.deferred')
+      _(task_span.attributes['messaging.operation.type']).must_equal('publish')
+      _(task_span.attributes['messaging.destination.name']).must_equal('MyTask')
+      _(task_span.attributes['code.function.name']).must_equal('MyTask.enqueue')
+    end
+
+    it 'stores the context' do
+      subject.create_enqueue_span(task_class:, task_context:) { result }
+      _(task_context.key?('traceparent')).must_equal(true)
+    end
+
+    describe 'with error' do
+      let(:result) { double(error?: true, exception: RuntimeError.new) }
+
+      it 'handles returned exceptions' do
+        subject.create_enqueue_span(task_class:, task_context:) { result }
+
+        _(task_span.status.code).must_equal(OpenTelemetry::Trace::Status::ERROR)
+        _(task_span.events.first.name).must_equal 'exception'
+        _(task_span.events.first.attributes['exception.type']).must_equal 'RuntimeError'
+      end
+    end
+  end
+
+  describe '.create_perform_span' do
+    let(:task) { double(meta: task_metadata) }
+    let(:task_metadata) { double(attempts: 0, retrying?: false) }
+
+    it 'creates a span' do
+      subject.create_perform_span(task_class:, task:, task_context:) { result }
+
+      _(finished_spans.size).must_equal(1)
+
+      _(task_span.name).must_equal('MyTask perform')
+      _(task_span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+      _(task_span.kind).must_equal(:consumer)
+
+      _(task_span.attributes['messaging.system']).must_equal('rage.deferred')
+      _(task_span.attributes['messaging.operation.type']).must_equal('process')
+      _(task_span.attributes['messaging.destination.name']).must_equal('MyTask')
+      _(task_span.attributes['code.function.name']).must_equal('MyTask#perform')
+      _(task_span.attributes['messaging.message.delivery_attempt']).must_be_nil
+
+      _(task_span.links.nil?).must_equal(true)
+    end
+
+    describe 'with retries' do
+      let(:task_metadata) { double(attempts: 3, retrying?: true) }
+
+      it 'adds the retries attribute to the span' do
+        subject.create_perform_span(task_class:, task:, task_context:) { result }
+
+        _(task_span.attributes['messaging.system']).must_equal('rage.deferred')
+        _(task_span.attributes['messaging.operation.type']).must_equal('process')
+        _(task_span.attributes['messaging.destination.name']).must_equal('MyTask')
+        _(task_span.attributes['code.function.name']).must_equal('MyTask#perform')
+        _(task_span.attributes['messaging.message.delivery_attempt']).must_equal(3)
+      end
+    end
+
+    describe 'with root span' do
+      let(:task_span) { finished_spans.last }
+
+      before do
+        instrumentation.tracer.in_span('test span') do |_span|
+          OpenTelemetry.propagation.inject(task_context)
+        end
+      end
+
+      it 'links to root span' do
+        subject.create_perform_span(task_class:, task:, task_context:) { result }
+
+        _(task_span.links.nil?).must_equal(false)
+        _(task_span.links.first).must_be_instance_of(OpenTelemetry::Trace::Link)
+      end
+    end
+
+    describe 'with baggage' do
+      before do
+        context = OpenTelemetry::Baggage.set_value('testing_baggage', 'it_worked')
+
+        OpenTelemetry::Context.with_current(context) do
+          OpenTelemetry.propagation.inject(task_context)
+        end
+      end
+
+      it 'propagates baggage' do
+        subject.create_perform_span(task_class:, task:, task_context:) do
+          _(OpenTelemetry::Baggage.value('testing_baggage')).must_equal('it_worked')
+          result
+        end
+      end
+    end
+
+    describe 'with error' do
+      let(:result) { double(error?: true, exception: RuntimeError.new) }
+
+      it 'handles returned exceptions' do
+        subject.create_perform_span(task_class:, task:, task_context:) { result }
+
+        _(task_span.status.code).must_equal(OpenTelemetry::Trace::Status::ERROR)
+        _(task_span.events.first.name).must_equal 'exception'
+        _(task_span.events.first.attributes['exception.type']).must_equal 'RuntimeError'
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/events_test.rb b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/events_test.rb
new file mode 100644
index 0000000000..0e05540d89
--- /dev/null
+++ b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/events_test.rb
@@ -0,0 +1,152 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage'
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage/handlers/events'
+
+describe OpenTelemetry::Instrumentation::Rage::Handlers::Events do
+  subject { OpenTelemetry::Instrumentation::Rage::Handlers::Events }
+
+  let(:instrumentation) { OpenTelemetry::Instrumentation::Rage::Instrumentation.instance }
+
+  let(:finished_spans) { EXPORTER.finished_spans }
+  let(:event_span) { finished_spans.first }
+
+  before do
+    instrumentation.install({})
+    EXPORTER.reset
+  end
+
+  after { instrumentation.instance_variable_set(:@installed, false) }
+
+  describe '.create_publisher_span' do
+    let(:event_class) { Class.new }
+    let(:event) { event_class.new }
+
+    before do
+      stub_const('MyEvent', event_class)
+    end
+
+    describe 'with active span' do
+      it 'creates a span' do
+        instrumentation.tracer.in_span('test span') do
+          subject.create_publisher_span(event:) {}
+        end
+
+        _(finished_spans.size).must_equal(2)
+
+        _(event_span.name).must_equal('MyEvent publish')
+        _(event_span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+        _(event_span.kind).must_equal(:producer)
+
+        _(event_span.attributes['messaging.system']).must_equal('rage.events')
+        _(event_span.attributes['messaging.operation.type']).must_equal('publish')
+        _(event_span.attributes['messaging.destination.name']).must_equal('MyEvent')
+      end
+
+      it 'yields control' do
+        yielded = false
+
+        subject.create_publisher_span(event:) do
+          yielded = true
+        end
+
+        _(yielded).must_equal(true)
+      end
+    end
+
+    describe 'without active span' do
+      it 'does not create a span' do
+        subject.create_publisher_span(event:) {}
+        _(finished_spans.size).must_equal(0)
+      end
+
+      it 'yields control' do
+        yielded = false
+
+        subject.create_publisher_span(event:) do
+          yielded = true
+        end
+
+        _(yielded).must_equal(true)
+      end
+    end
+  end
+
+  describe '.create_subscriber_span' do
+    let(:subscriber_class) do
+      Class.new do
+        def self.deferred?; end
+      end
+    end
+    let(:subscriber) { subscriber_class.new }
+
+    let(:event_class) { Class.new }
+    let(:event) { event_class.new }
+
+    let(:result) { double(error?: false) }
+
+    before do
+      stub_const('MySubscriber', subscriber_class)
+      stub_const('MyEvent', event_class)
+    end
+
+    describe 'with a synchronous subscriber' do
+      it 'creates a span' do
+        subscriber_class.stub(:deferred?, -> { false }) do
+          subject.create_subscriber_span(subscriber:, event:) { result }
+        end
+
+        _(finished_spans.size).must_equal(1)
+
+        _(event_span.name).must_equal('MySubscriber process')
+        _(event_span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+        _(event_span.kind).must_equal(:consumer)
+
+        _(event_span.attributes['messaging.system']).must_equal('rage.events')
+        _(event_span.attributes['messaging.operation.type']).must_equal('process')
+        _(event_span.attributes['messaging.destination.name']).must_equal('MyEvent')
+        _(event_span.attributes['code.function.name']).must_equal('MySubscriber#call')
+      end
+
+      describe 'with error' do
+        let(:result) { double(error?: true, exception: RuntimeError.new) }
+
+        it 'handles returned exceptions' do
+          subject.create_subscriber_span(subscriber:, event:) { result }
+
+          _(event_span.status.code).must_equal(OpenTelemetry::Trace::Status::ERROR)
+          _(event_span.events.first.name).must_equal 'exception'
+          _(event_span.events.first.attributes['exception.type']).must_equal 'RuntimeError'
+        end
+      end
+    end
+
+    describe 'with an asynchronous subscriber' do
+      it 'does not create a span' do
+        subscriber_class.stub(:deferred?, -> { true }) do
+          subject.create_subscriber_span(subscriber:, event:) {}
+        end
+
+        _(finished_spans.size).must_equal(0)
+      end
+
+      it 'yields control' do
+        yielded = false
+
+        subscriber_class.stub(:deferred?, -> { true }) do
+          subject.create_subscriber_span(subscriber:, event:) do
+            yielded = true
+          end
+        end
+
+        _(yielded).must_equal(true)
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/fiber_test.rb b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/fiber_test.rb
new file mode 100644
index 0000000000..9629f874d3
--- /dev/null
+++ b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/fiber_test.rb
@@ -0,0 +1,95 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage'
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage/handlers/fiber'
+
+describe OpenTelemetry::Instrumentation::Rage::Handlers::Fiber do
+  subject { OpenTelemetry::Instrumentation::Rage::Handlers::Fiber }
+
+  let(:instrumentation) { OpenTelemetry::Instrumentation::Rage::Instrumentation.instance }
+
+  before do
+    instrumentation.install({})
+    EXPORTER.reset
+  end
+
+  after { instrumentation.instance_variable_set(:@installed, false) }
+
+  describe 'Patch' do
+    let(:klass) do
+      Class.new do
+        def self.schedule(&)
+          yield
+        end
+      end
+    end
+
+    before do
+      klass.singleton_class.prepend(subject::Patch)
+      Fiber[:__rage_otel_context] = nil
+    end
+
+    describe 'without active span' do
+      it 'saves context to fiber storage' do
+        _(Fiber[:__rage_otel_context]).must_be_nil
+        klass.schedule {}
+        _(Fiber[:__rage_otel_context]).must_be_instance_of(OpenTelemetry::Context)
+      end
+    end
+
+    describe 'with active span' do
+      it 'saves context to fiber storage' do
+        _(Fiber[:__rage_otel_context]).must_be_nil
+        instrumentation.tracer.in_span('test span') do
+          klass.schedule {}
+        end
+        _(Fiber[:__rage_otel_context]).must_be_instance_of(OpenTelemetry::Context)
+      end
+    end
+
+    it 'calls super' do
+      klass.stub(:schedule, -> { :test_schedule_result }) do
+        _(klass.schedule {}).must_equal(:test_schedule_result)
+      end
+    end
+  end
+
+  describe '#initialize' do
+    it 'patches Fiber' do
+      expect(Fiber.singleton_class).to receive(:prepend).with(subject::Patch)
+      subject.new
+    end
+  end
+
+  describe '#propagate_otel_context' do
+    before do
+      allow(Fiber.singleton_class).to receive(:prepend).with(subject::Patch)
+    end
+
+    it 'propagates context' do
+      instrumentation.tracer.in_span('test span') do
+        Fiber[:__rage_otel_context] = OpenTelemetry::Context.current
+      end
+
+      subject.new.propagate_otel_context do
+        _(OpenTelemetry::Trace.current_span.name).must_equal('test span')
+      end
+    end
+
+    describe 'with baggage' do
+      it 'propagates baggage' do
+        Fiber[:__rage_otel_context] = OpenTelemetry::Baggage.set_value('testing_baggage', 'it_worked')
+
+        subject.new.propagate_otel_context do
+          _(OpenTelemetry::Baggage.value('testing_baggage')).must_equal('it_worked')
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/request_test.rb b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/request_test.rb
new file mode 100644
index 0000000000..cb75a07039
--- /dev/null
+++ b/instrumentation/rage/test/opentelemetry/instrumentation/rage/handlers/request_test.rb
@@ -0,0 +1,90 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage'
+require_relative '../../../../../lib/opentelemetry/instrumentation/rage/handlers/request'
+
+describe OpenTelemetry::Instrumentation::Rage::Handlers::Request do
+  subject { OpenTelemetry::Instrumentation::Rage::Handlers::Request }
+
+  let(:instrumentation) { OpenTelemetry::Instrumentation::Rage::Instrumentation.instance }
+
+  before do
+    instrumentation.install({})
+    EXPORTER.reset
+  end
+
+  after { instrumentation.instance_variable_set(:@installed, false) }
+
+  describe '.enrich_request_span' do
+    let(:controller_class) do
+      Class.new do
+        def action_name; end
+      end
+    end
+    let(:controller) { controller_class.new }
+    let(:request) { double(method: 'PUT', route_uri_pattern: '/api/test/:id') }
+    let(:result) { double(error?: false) }
+
+    before do
+      stub_const('MyController', controller_class)
+      allow(controller).to receive(:action_name).and_return('my_action')
+    end
+
+    it 'updates span name and attributes' do
+      instrumentation.tracer.in_span('test span') do |span|
+        context = OpenTelemetry::Instrumentation::Rack.context_with_span(span)
+
+        OpenTelemetry::Context.with_current(context) do
+          subject.enrich_request_span(controller:, request:) { result }
+        end
+
+        _(span.name).must_equal('PUT /api/test/:id')
+
+        _(span.attributes['http.route']).must_equal('/api/test/:id')
+        _(span.attributes['code.function.name']).must_equal('MyController#my_action')
+
+        _(span.status.code).must_equal(OpenTelemetry::Trace::Status::UNSET)
+      end
+    end
+
+    describe 'with error' do
+      let(:result) { double(error?: true, exception: RuntimeError.new) }
+
+      it 'handles returned exceptions' do
+        instrumentation.tracer.in_span('test span') do |span|
+          context = OpenTelemetry::Instrumentation::Rack.context_with_span(span)
+
+          OpenTelemetry::Context.with_current(context) do
+            subject.enrich_request_span(controller:, request:) { result }
+          end
+
+          _(span.status.code).must_equal(OpenTelemetry::Trace::Status::ERROR)
+          _(span.events.first.name).must_equal 'exception'
+          _(span.events.first.attributes['exception.type']).must_equal 'RuntimeError'
+        end
+      end
+    end
+
+    describe 'with inactive span' do
+      it 'yields control' do
+        span = OpenTelemetry::Trace.non_recording_span(OpenTelemetry::Trace::SpanContext.new)
+        context = OpenTelemetry::Instrumentation::Rack.context_with_span(span)
+        yielded = false
+
+        OpenTelemetry::Context.with_current(context) do
+          subject.enrich_request_span(controller:, request:) do
+            yielded = true
+          end
+        end
+
+        _(yielded).must_equal(true)
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/test/opentelemetry/instrumentation/rage/instrumentation_test.rb b/instrumentation/rage/test/opentelemetry/instrumentation/rage/instrumentation_test.rb
new file mode 100644
index 0000000000..8d8d9cac49
--- /dev/null
+++ b/instrumentation/rage/test/opentelemetry/instrumentation/rage/instrumentation_test.rb
@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../lib/opentelemetry/instrumentation/rage'
+
+describe OpenTelemetry::Instrumentation::Rage do
+  let(:instrumentation) { OpenTelemetry::Instrumentation::Rage::Instrumentation.instance }
+
+  it 'has #name' do
+    _(instrumentation.name).must_equal 'OpenTelemetry::Instrumentation::Rage'
+  end
+
+  it 'has #version' do
+    _(instrumentation.version).wont_be_nil
+    _(instrumentation.version).wont_be_empty
+  end
+
+  describe '#install' do
+    after do
+      instrumentation.instance_variable_set(:@installed, false)
+    end
+
+    it 'accepts argument' do
+      _(instrumentation.install({})).must_equal(true)
+    end
+
+    it 'installs Rack middleware' do
+      expect(Rage.config.middleware).to receive(:insert_after) do |position, (middleware, _, _)|
+        _(position).must_equal(0)
+        _(middleware.name).must_match(/^OpenTelemetry::Instrumentation::Rack::Middlewares/)
+      end
+
+      instrumentation.install({})
+    end
+
+    it 'installs observability components' do
+      expect(Rage.config.telemetry).to receive(:use).with(OpenTelemetry::Instrumentation::Rage::Handlers::Request)
+      expect(Rage.config.telemetry).to receive(:use).with(OpenTelemetry::Instrumentation::Rage::Handlers::Cable)
+      expect(Rage.config.telemetry).to receive(:use).with(OpenTelemetry::Instrumentation::Rage::Handlers::Deferred)
+      expect(Rage.config.telemetry).to receive(:use).with(OpenTelemetry::Instrumentation::Rage::Handlers::Events)
+      expect(Rage.config.telemetry).to receive(:use).with(instance_of(OpenTelemetry::Instrumentation::Rage::Handlers::Fiber))
+
+      expect(Rage.config.log_context).to receive(:<<).with(OpenTelemetry::Instrumentation::Rage::LogContext)
+
+      instrumentation.install({})
+    end
+  end
+
+  describe '#compatible' do
+    describe 'with a compatible version' do
+      before do
+        stub_const('::Rage::VERSION', '1.22.1')
+      end
+
+      it 'returns true' do
+        _(instrumentation.compatible?).must_equal(true)
+      end
+
+      it 'logs a warning' do
+        expect(OpenTelemetry.logger).not_to receive(:warn)
+        instrumentation.compatible?
+      end
+    end
+
+    describe 'with an incompatible version' do
+      before do
+        stub_const('::Rage::VERSION', '1.11.0')
+      end
+
+      it 'returns false' do
+        _(instrumentation.compatible?).must_equal(false)
+      end
+
+      it 'logs a warning' do
+        expect(OpenTelemetry.logger).to receive(:warn).with(/1.11.0 is not supported/)
+        instrumentation.compatible?
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/test/opentelemetry/instrumentation/rage/log_context_test.rb b/instrumentation/rage/test/opentelemetry/instrumentation/rage/log_context_test.rb
new file mode 100644
index 0000000000..424dc9f327
--- /dev/null
+++ b/instrumentation/rage/test/opentelemetry/instrumentation/rage/log_context_test.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../lib/opentelemetry/instrumentation/rage'
+require_relative '../../../../lib/opentelemetry/instrumentation/rage/log_context'
+
+describe OpenTelemetry::Instrumentation::Rage::LogContext do
+  subject { OpenTelemetry::Instrumentation::Rage::LogContext.call }
+
+  let(:instrumentation) { OpenTelemetry::Instrumentation::Rage::Instrumentation.instance }
+
+  describe 'with no active span' do
+    it 'returns nil' do
+      _(subject).must_be_nil
+    end
+  end
+
+  describe 'with active span' do
+    before { instrumentation.install({}) }
+    after { instrumentation.instance_variable_set(:@installed, false) }
+
+    it 'returns a hash with trace_id and span_id' do
+      instrumentation.tracer.in_span('test span') do |span|
+        _(subject[:trace_id]).must_equal(span.context.hex_trace_id)
+        _(subject[:span_id]).must_equal(span.context.hex_span_id)
+      end
+    end
+  end
+
+  describe 'with an exception' do
+    it 'handles raised exceptions' do
+      OpenTelemetry::Trace.stub(:current_span, ->(**) { raise 'Test Error' }) do
+        expect(OpenTelemetry).to receive(:handle_error).with(exception: instance_of(RuntimeError))
+        _(subject).must_be_nil
+      end
+    end
+  end
+end
diff --git a/instrumentation/rage/test/test_helper.rb b/instrumentation/rage/test/test_helper.rb
new file mode 100644
index 0000000000..9b2ae0c69b
--- /dev/null
+++ b/instrumentation/rage/test/test_helper.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'bundler/setup'
+Bundler.require(:default, :development, :test)
+
+require 'minitest/autorun'
+require 'webmock/minitest'
+require 'rspec/mocks/minitest_integration'
+require 'rage/all'
+
+# global opentelemetry-sdk setup:
+EXPORTER = OpenTelemetry::SDK::Trace::Export::InMemorySpanExporter.new
+span_processor = OpenTelemetry::SDK::Trace::Export::SimpleSpanProcessor.new(EXPORTER)
+
+OpenTelemetry::SDK.configure do |c|
+  c.error_handler = ->(exception:, message:) { raise(exception || message) }
+  c.logger = Logger.new($stderr, level: ENV.fetch('OTEL_LOG_LEVEL', 'fatal').to_sym)
+  c.add_span_processor span_processor
+end
diff --git a/releases/Gemfile b/releases/Gemfile
index ef1f02d1ae..d9e336aa34 100644
--- a/releases/Gemfile
+++ b/releases/Gemfile
@@ -27,6 +27,7 @@ gem 'pg'
 gem 'que'
 gem 'racecar'
 gem 'rack'
+gem 'rage-rb'
 gem 'rails'
 gem 'rake'
 gem 'rdkafka'