diff --git a/instrumentation/nginx/README.md b/instrumentation/nginx/README.md
index 3ba37d761..f1379f600 100644
--- a/instrumentation/nginx/README.md
+++ b/instrumentation/nginx/README.md
@@ -40,7 +40,9 @@ load_module /path/to/otel_ngx_module.so;
 
 http {
   opentelemetry_service_name "nginx-proxy";
-  opentelemetry_otlp_traces_endpoint "http://collector:4318/v1/traces"
+  opentelemetry_otlp_traces_endpoint "http://collector:4318/v1/traces";
+  opentelemetry_resource_attr "service.version" "1.0.0";
+  opentelemetry_resource_attr "deployment.environment.name" "production";
 
   server {
     listen 80;
@@ -104,6 +106,14 @@ Service name for the nginx instance (default: `uknown:nginx`).
 - **syntax**: `opentelemetry_service_name <name>`
 - **block**: `http`
 
+### `opentelemetry_resource_attr`
+
+Adds a custom resource attribute to the trace provider. Resource attributes represent the entity producing telemetry data, e.g. `opentelemetry_resource_attr "service.version" "1.0.0"` or `opentelemetry_resource_attr "deployment.environment.name" "production"`.
+
+- **required**: `false`
+- **syntax**: `opentelemetry_resource_attr <key> <value>`
+- **block**: `http`
+
 ### `opentelemetry_span_processor`
 
 Chooses between simple and batch span processor (default: `batch`).
diff --git a/instrumentation/nginx/src/agent_config.h b/instrumentation/nginx/src/agent_config.h
index 2e667c5dd..ea99bc72f 100644
--- a/instrumentation/nginx/src/agent_config.h
+++ b/instrumentation/nginx/src/agent_config.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <string>
+#include <unordered_map>
 
 extern "C" {
 #include <ngx_core.h>
@@ -38,4 +39,5 @@ struct OtelNgxAgentConfig
 
   std::string sampler = "parentbased_always_on";
   double samplerRatio = 1.0;
+  std::unordered_map<std::string, std::string> resourceAttributes;
 };
diff --git a/instrumentation/nginx/src/otel_ngx_module.cpp b/instrumentation/nginx/src/otel_ngx_module.cpp
index 0aacebe52..f32c615b0 100644
--- a/instrumentation/nginx/src/otel_ngx_module.cpp
+++ b/instrumentation/nginx/src/otel_ngx_module.cpp
@@ -1051,6 +1051,41 @@ char* OtelNgxSetTracesSamplerRatio(ngx_conf_t* cf, ngx_command_t*, void*) {
   return NGX_CONF_OK;
 }
 
+char* OtelNgxSetResourceAttr(ngx_conf_t* cf, ngx_command_t*, void*) {
+  OtelMainConf* otelMainConf = GetOtelMainConf(cf);
+
+  ngx_str_t* values = (ngx_str_t*)cf->args->elts;
+
+  if (cf->args->nelts != 3) {
+    ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, 
+                       "opentelemetry_resource_attr takes 2 arguments");
+    return (char*)NGX_CONF_ERROR;
+  }
+
+  ngx_str_t* key = &values[1];
+  ngx_str_t* value = &values[2];
+
+  if (key->len == 0) {
+    ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, 
+                       "opentelemetry_resource_attr key cannot be empty");
+    return (char*)NGX_CONF_ERROR;
+  }
+
+  if (value->len == 0) {
+    ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, 
+                       "opentelemetry_resource_attr value cannot be empty");
+    return (char*)NGX_CONF_ERROR;
+  }
+
+  // Safe string construction with explicit length
+  std::string strKey((const char*)key->data, key->len);
+  std::string strValue((const char*)value->data, value->len);
+
+  otelMainConf->agentConfig.resourceAttributes[strKey] = strValue;
+
+  return NGX_CONF_OK;
+}
+
 static char* OtelNgxSetCustomAttribute(ngx_conf_t* conf, ngx_command_t*, void* userConf) {
   OtelNgxLocationConf* locConf = (OtelNgxLocationConf*)userConf;
 
@@ -1250,6 +1285,14 @@ static ngx_command_t kOtelNgxCommands[] = {
     0,
     nullptr,
   },
+  {
+    ngx_string("opentelemetry_resource_attr"),
+    NGX_HTTP_MAIN_CONF | NGX_CONF_TAKE2,
+    OtelNgxSetResourceAttr,
+    NGX_HTTP_MAIN_CONF_OFFSET,
+    0,
+    nullptr,
+  },
 #if (NGX_PCRE)
   {
     ngx_string("opentelemetry_sensitive_header_names"),
@@ -1372,10 +1415,22 @@ static ngx_int_t OtelNgxStart(ngx_cycle_t* cycle) {
   }
 
   auto processor = CreateProcessor(agentConf, std::move(exporter));
+  
+  // Build resource attributes
+  opentelemetry::sdk::resource::ResourceAttributes resourceAttrs;
+  for (const auto& attr : agentConf->resourceAttributes) {
+    resourceAttrs[attr.first] = attr.second;
+  }
+  
+  // Set service.name if not already provided via resource attributes
+  if (resourceAttrs.find("service.name") == resourceAttrs.end()) {
+    resourceAttrs["service.name"] = serviceName;
+  }
+  
   auto provider =
     nostd::shared_ptr<opentelemetry::trace::TracerProvider>(new sdktrace::TracerProvider(
       std::move(processor),
-      opentelemetry::sdk::resource::Resource::Create({{"service.name", serviceName}}),
+      opentelemetry::sdk::resource::Resource::Create(resourceAttrs),
       std::move(sampler)));
 
   opentelemetry::trace::Provider::SetTracerProvider(std::move(provider));
diff --git a/instrumentation/nginx/test/conf/nginx.conf b/instrumentation/nginx/test/conf/nginx.conf
index 4798d79fe..06abe3fc7 100644
--- a/instrumentation/nginx/test/conf/nginx.conf
+++ b/instrumentation/nginx/test/conf/nginx.conf
@@ -7,6 +7,8 @@ http {
   opentelemetry_service_name "nginx-proxy";
   opentelemetry_otlp_traces_endpoint "http://collector:4318/v1/traces";
   opentelemetry_span_processor "simple";
+  opentelemetry_resource_attr "service.version" "1.0.0";
+  opentelemetry_resource_attr "deployment.environment.name" "test";
   opentelemetry_operation_name otel_test;
   opentelemetry_ignore_paths ignored.php;
   access_log stderr;
diff --git a/instrumentation/nginx/test/instrumentation/test/instrumentation_test.exs b/instrumentation/nginx/test/instrumentation/test/instrumentation_test.exs
index f8569aac1..a31117417 100644
--- a/instrumentation/nginx/test/instrumentation/test/instrumentation_test.exs
+++ b/instrumentation/nginx/test/instrumentation/test/instrumentation_test.exs
@@ -154,6 +154,8 @@ defmodule InstrumentationTest do
     assert status == 200
 
     assert attrib(resource, "service.name") == "nginx-proxy"
+    assert attrib(resource, "service.version") == "1.0.0"
+    assert attrib(resource, "deployment.environment.name") == "test"
   end
 
   test "HTTP upstream | span attributes", %{trace_file: trace_file} do