diff --git a/CHANGELOG.md b/CHANGELOG.md
index 42e61ce31050..fdea17ff2e44 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,24 @@
 
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
 
-Work in this release was contributed by @xgedev, @Mohataseem89, @sebws, @G-Rath, @maximepvrt, and @gianpaj. Thank you for your contributions!
+- **feat(core): Apply scope attributes to metrics ([#18738](https://github.com/getsentry/sentry-javascript/pull/18738))**
+
+  You can now set attributes on the SDK's scopes which will be applied to all metrics as long as the respective scopes are active. For the time being, only `string`, `number` and `boolean` attribute values are supported.
+
+  ```ts
+  Sentry.getGlobalScope().setAttributes({ is_admin: true, auth_provider: 'google' });
+
+  Sentry.withScope(scope => {
+    scope.setAttribute('step', 'authentication');
+
+    // scope attributes `is_admin`, `auth_provider` and `step` are added
+    Sentry.metrics.count('clicks', 1, { attributes: { activeSince: 100 } });
+    Sentry.metrics.gauge('timeSinceRefresh', 4, { unit: 'hour' });
+  });
+
+  // scope attributes `is_admin` and `auth_provider` are added
+  Sentry.metrics.count('response_time', 283.33, { unit: 'millisecond' });
+  ```
 
 - ref(nextjs): Drop `resolve` dependency from the Next.js SDK ([#18618](https://github.com/getsentry/sentry-javascript/pull/18618))
 
@@ -22,6 +39,8 @@ Work in this release was contributed by @xgedev, @Mohataseem89, @sebws, @G-Rath,
 
 </details>
 
+Work in this release was contributed by @xgedev, @Mohataseem89, @sebws, @G-Rath, @maximepvrt, and @gianpaj. Thank you for your contributions!
+
 ## 10.32.0
 
 ### Important Changes
diff --git a/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/subject.js b/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/subject.js
index 0b8fced8d6e3..6e1a35009e5f 100644
--- a/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/subject.js
+++ b/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/subject.js
@@ -9,4 +9,10 @@ Sentry.startSpan({ name: 'test-span', op: 'test' }, () => {
 Sentry.setUser({ id: 'user-123', email: 'test@example.com', username: 'testuser' });
 Sentry.metrics.count('test.user.counter', 1, { attributes: { action: 'click' } });
 
+Sentry.withScope(scope => {
+  scope.setAttribute('scope_attribute_1', 1);
+  scope.setAttributes({ scope_attribute_2: { value: 'test' }, scope_attribute_3: { value: 38, unit: 'gigabyte' } });
+  Sentry.metrics.count('test.scope.attributes.counter', 1, { attributes: { action: 'click' } });
+});
+
 Sentry.flush();
diff --git a/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/test.ts b/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/test.ts
index 3a8ac97f8408..41eb00a90bc8 100644
--- a/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/test.ts
+++ b/dev-packages/browser-integration-tests/suites/public-api/metrics/simple/test.ts
@@ -17,7 +17,7 @@ sentryTest('should capture all metric types', async ({ getLocalTestUrl, page })
   expect(envelopeItems[0]).toEqual([
     {
       type: 'trace_metric',
-      item_count: 5,
+      item_count: 6,
       content_type: 'application/vnd.sentry.items.trace-metric+json',
     },
     {
@@ -98,6 +98,60 @@ sentryTest('should capture all metric types', async ({ getLocalTestUrl, page })
             'sentry.sdk.version': { value: expect.any(String), type: 'string' },
           },
         },
+        {
+          timestamp: expect.any(Number),
+          trace_id: expect.stringMatching(/^[\da-f]{32}$/),
+          name: 'test.scope.attributes.counter',
+          type: 'counter',
+          value: 1,
+          attributes: {
+            action: {
+              type: 'string',
+              value: 'click',
+            },
+            scope_attribute_1: {
+              type: 'integer',
+              value: 1,
+            },
+            scope_attribute_2: {
+              type: 'string',
+              value: 'test',
+            },
+            scope_attribute_3: {
+              type: 'integer',
+              unit: 'gigabyte',
+              value: 38,
+            },
+            'sentry.environment': {
+              type: 'string',
+              value: 'test',
+            },
+            'sentry.release': {
+              type: 'string',
+              value: '1.0.0',
+            },
+            'sentry.sdk.name': {
+              type: 'string',
+              value: 'sentry.javascript.browser',
+            },
+            'sentry.sdk.version': {
+              type: 'string',
+              value: '10.32.1',
+            },
+            'user.email': {
+              type: 'string',
+              value: 'test@example.com',
+            },
+            'user.id': {
+              type: 'string',
+              value: 'user-123',
+            },
+            'user.name': {
+              type: 'string',
+              value: 'testuser',
+            },
+          },
+        },
       ],
     },
   ]);
diff --git a/dev-packages/node-core-integration-tests/suites/public-api/metrics/scenario.ts b/dev-packages/node-core-integration-tests/suites/public-api/metrics/scenario.ts
index 77adfae79802..86905bae1066 100644
--- a/dev-packages/node-core-integration-tests/suites/public-api/metrics/scenario.ts
+++ b/dev-packages/node-core-integration-tests/suites/public-api/metrics/scenario.ts
@@ -25,6 +25,12 @@ async function run(): Promise<void> {
   Sentry.setUser({ id: 'user-123', email: 'test@example.com', username: 'testuser' });
   Sentry.metrics.count('test.user.counter', 1, { attributes: { action: 'click' } });
 
+  Sentry.withScope(scope => {
+    scope.setAttribute('scope_attribute_1', 1);
+    scope.setAttributes({ scope_attribute_2: { value: 'test' }, scope_attribute_3: { value: 38, unit: 'gigabyte' } });
+    Sentry.metrics.count('test.scope.attributes.counter', 1, { attributes: { action: 'click' } });
+  });
+
   await Sentry.flush();
 }
 
diff --git a/dev-packages/node-core-integration-tests/suites/public-api/metrics/test.ts b/dev-packages/node-core-integration-tests/suites/public-api/metrics/test.ts
index c89c8fb59e55..83715375f2cc 100644
--- a/dev-packages/node-core-integration-tests/suites/public-api/metrics/test.ts
+++ b/dev-packages/node-core-integration-tests/suites/public-api/metrics/test.ts
@@ -87,6 +87,60 @@ describe('metrics', () => {
                 'sentry.sdk.version': { value: expect.any(String), type: 'string' },
               },
             },
+            {
+              timestamp: expect.any(Number),
+              trace_id: expect.stringMatching(/^[\da-f]{32}$/),
+              name: 'test.scope.attributes.counter',
+              type: 'counter',
+              value: 1,
+              attributes: {
+                action: {
+                  type: 'string',
+                  value: 'click',
+                },
+                scope_attribute_1: {
+                  type: 'integer',
+                  value: 1,
+                },
+                scope_attribute_2: {
+                  type: 'string',
+                  value: 'test',
+                },
+                scope_attribute_3: {
+                  type: 'integer',
+                  unit: 'gigabyte',
+                  value: 38,
+                },
+                'sentry.environment': {
+                  type: 'string',
+                  value: 'test',
+                },
+                'sentry.release': {
+                  type: 'string',
+                  value: '1.0.0',
+                },
+                'sentry.sdk.name': {
+                  type: 'string',
+                  value: 'sentry.javascript.node-core',
+                },
+                'sentry.sdk.version': {
+                  type: 'string',
+                  value: '10.32.1',
+                },
+                'user.email': {
+                  type: 'string',
+                  value: 'test@example.com',
+                },
+                'user.id': {
+                  type: 'string',
+                  value: 'user-123',
+                },
+                'user.name': {
+                  type: 'string',
+                  value: 'testuser',
+                },
+              },
+            },
           ],
         },
       })
diff --git a/dev-packages/node-integration-tests/suites/public-api/metrics/scenario.ts b/dev-packages/node-integration-tests/suites/public-api/metrics/scenario.ts
index 8d02a1fcd17c..170d4b96e279 100644
--- a/dev-packages/node-integration-tests/suites/public-api/metrics/scenario.ts
+++ b/dev-packages/node-integration-tests/suites/public-api/metrics/scenario.ts
@@ -22,6 +22,12 @@ async function run(): Promise<void> {
   Sentry.setUser({ id: 'user-123', email: 'test@example.com', username: 'testuser' });
   Sentry.metrics.count('test.user.counter', 1, { attributes: { action: 'click' } });
 
+  Sentry.withScope(scope => {
+    scope.setAttribute('scope_attribute_1', 1);
+    scope.setAttributes({ scope_attribute_2: { value: 'test' }, scope_attribute_3: { value: 38, unit: 'gigabyte' } });
+    Sentry.metrics.count('test.scope.attributes.counter', 1, { attributes: { action: 'click' } });
+  });
+
   await Sentry.flush();
 }
 
diff --git a/dev-packages/node-integration-tests/suites/public-api/metrics/test.ts b/dev-packages/node-integration-tests/suites/public-api/metrics/test.ts
index 471fe114fa1e..7e4b71c9ad28 100644
--- a/dev-packages/node-integration-tests/suites/public-api/metrics/test.ts
+++ b/dev-packages/node-integration-tests/suites/public-api/metrics/test.ts
@@ -86,6 +86,60 @@ describe('metrics', () => {
                 'sentry.sdk.version': { value: expect.any(String), type: 'string' },
               },
             },
+            {
+              timestamp: expect.any(Number),
+              trace_id: expect.stringMatching(/^[\da-f]{32}$/),
+              name: 'test.scope.attributes.counter',
+              type: 'counter',
+              value: 1,
+              attributes: {
+                action: {
+                  type: 'string',
+                  value: 'click',
+                },
+                scope_attribute_1: {
+                  type: 'integer',
+                  value: 1,
+                },
+                scope_attribute_2: {
+                  type: 'string',
+                  value: 'test',
+                },
+                scope_attribute_3: {
+                  type: 'integer',
+                  unit: 'gigabyte',
+                  value: 38,
+                },
+                'sentry.environment': {
+                  type: 'string',
+                  value: 'test',
+                },
+                'sentry.release': {
+                  type: 'string',
+                  value: '1.0.0',
+                },
+                'sentry.sdk.name': {
+                  type: 'string',
+                  value: 'sentry.javascript.node',
+                },
+                'sentry.sdk.version': {
+                  type: 'string',
+                  value: '10.32.1',
+                },
+                'user.email': {
+                  type: 'string',
+                  value: 'test@example.com',
+                },
+                'user.id': {
+                  type: 'string',
+                  value: 'user-123',
+                },
+                'user.name': {
+                  type: 'string',
+                  value: 'testuser',
+                },
+              },
+            },
           ],
         },
       })
diff --git a/packages/core/src/metrics/internal.ts b/packages/core/src/metrics/internal.ts
index 846ecf89d6e5..bdd13d884967 100644
--- a/packages/core/src/metrics/internal.ts
+++ b/packages/core/src/metrics/internal.ts
@@ -1,4 +1,4 @@
-import { serializeAttributes } from '../attributes';
+import { type RawAttributes, serializeAttributes } from '../attributes';
 import { getGlobalSingleton } from '../carrier';
 import type { Client } from '../client';
 import { getClient, getCurrentScope, getIsolationScope } from '../currentScopes';
@@ -6,6 +6,7 @@ import { DEBUG_BUILD } from '../debug-build';
 import type { Scope } from '../scope';
 import type { Integration } from '../types-hoist/integration';
 import type { Metric, SerializedMetric } from '../types-hoist/metric';
+import type { User } from '../types-hoist/user';
 import { debug } from '../utils/debug-logger';
 import { getCombinedScopeData } from '../utils/scopeData';
 import { _getSpanForScope } from '../utils/spanOnScope';
@@ -77,7 +78,7 @@ export interface InternalCaptureMetricOptions {
 /**
  * Enriches metric with all contextual attributes (user, SDK metadata, replay, etc.)
  */
-function _enrichMetricAttributes(beforeMetric: Metric, client: Client, currentScope: Scope): Metric {
+function _enrichMetricAttributes(beforeMetric: Metric, client: Client, user: User): Metric {
   const { release, environment } = client.getOptions();
 
   const processedMetricAttributes = {
@@ -85,12 +86,9 @@ function _enrichMetricAttributes(beforeMetric: Metric, client: Client, currentSc
   };
 
   // Add user attributes
-  const {
-    user: { id, email, username },
-  } = getCombinedScopeData(getIsolationScope(), currentScope);
-  setMetricAttribute(processedMetricAttributes, 'user.id', id, false);
-  setMetricAttribute(processedMetricAttributes, 'user.email', email, false);
-  setMetricAttribute(processedMetricAttributes, 'user.name', username, false);
+  setMetricAttribute(processedMetricAttributes, 'user.id', user.id, false);
+  setMetricAttribute(processedMetricAttributes, 'user.email', user.email, false);
+  setMetricAttribute(processedMetricAttributes, 'user.name', user.username, false);
 
   // Add Sentry metadata
   setMetricAttribute(processedMetricAttributes, 'sentry.release', release);
@@ -125,7 +123,12 @@ function _enrichMetricAttributes(beforeMetric: Metric, client: Client, currentSc
 /**
  * Creates a serialized metric ready to be sent to Sentry.
  */
-function _buildSerializedMetric(metric: Metric, client: Client, currentScope: Scope): SerializedMetric {
+function _buildSerializedMetric(
+  metric: Metric,
+  client: Client,
+  currentScope: Scope,
+  scopeAttributes: RawAttributes<Record<string, unknown>> | undefined,
+): SerializedMetric {
   // Get trace context
   const [, traceContext] = _getTraceInfoFromScope(client, currentScope);
   const span = _getSpanForScope(currentScope);
@@ -140,7 +143,10 @@ function _buildSerializedMetric(metric: Metric, client: Client, currentScope: Sc
     type: metric.type,
     unit: metric.unit,
     value: metric.value,
-    attributes: serializeAttributes(metric.attributes, 'skip-undefined'),
+    attributes: {
+      ...serializeAttributes(scopeAttributes),
+      ...serializeAttributes(metric.attributes, 'skip-undefined'),
+    },
   };
 }
 
@@ -174,7 +180,8 @@ export function _INTERNAL_captureMetric(beforeMetric: Metric, options?: Internal
   }
 
   // Enrich metric with contextual attributes
-  const enrichedMetric = _enrichMetricAttributes(beforeMetric, client, currentScope);
+  const { user, attributes: scopeAttributes } = getCombinedScopeData(getIsolationScope(), currentScope);
+  const enrichedMetric = _enrichMetricAttributes(beforeMetric, client, user);
 
   client.emit('processMetric', enrichedMetric);
 
@@ -188,7 +195,7 @@ export function _INTERNAL_captureMetric(beforeMetric: Metric, options?: Internal
     return;
   }
 
-  const serializedMetric = _buildSerializedMetric(processedMetric, client, currentScope);
+  const serializedMetric = _buildSerializedMetric(processedMetric, client, currentScope, scopeAttributes);
 
   DEBUG_BUILD && debug.log('[Metric]', serializedMetric);
 
diff --git a/packages/core/src/scope.ts b/packages/core/src/scope.ts
index 0639cdb845f1..e6de9b1f27ef 100644
--- a/packages/core/src/scope.ts
+++ b/packages/core/src/scope.ts
@@ -306,8 +306,8 @@ export class Scope {
   /**
    * Sets attributes onto the scope.
    *
-   * These attributes are currently only applied to logs.
-   * In the future, they will also be applied to metrics and spans.
+   * These attributes are currently applied to logs and metrics.
+   * In the future, they will also be applied to spans.
    *
    * Important: For now, only strings, numbers and boolean attributes are supported, despite types allowing for
    * more complex attribute types. We'll add this support in the future but already specify the wider type to
@@ -338,8 +338,8 @@ export class Scope {
   /**
    * Sets an attribute onto the scope.
    *
-   * These attributes are currently only applied to logs.
-   * In the future, they will also be applied to metrics and spans.
+   * These attributes are currently applied to logs and metrics.
+   * In the future, they will also be applied to spans.
    *
    * Important: For now, only strings, numbers and boolean attributes are supported, despite types allowing for
    * more complex attribute types. We'll add this support in the future but already specify the wider type to
diff --git a/packages/core/test/lib/metrics/internal.test.ts b/packages/core/test/lib/metrics/internal.test.ts
index 55753082d7ff..434f4b6c8289 100644
--- a/packages/core/test/lib/metrics/internal.test.ts
+++ b/packages/core/test/lib/metrics/internal.test.ts
@@ -171,6 +171,52 @@ describe('_INTERNAL_captureMetric', () => {
     });
   });
 
+  it('includes scope attributes in metric attributes', () => {
+    const options = getDefaultTestClientOptions({ dsn: PUBLIC_DSN });
+    const client = new TestClient(options);
+    const scope = new Scope();
+    scope.setClient(client);
+    scope.setAttribute('scope_attribute_1', 1);
+    scope.setAttributes({ scope_attribute_2: { value: 'test' }, scope_attribute_3: { value: 38, unit: 'gigabyte' } });
+
+    _INTERNAL_captureMetric({ type: 'counter', name: 'test.metric', value: 1 }, { scope });
+
+    const metricAttributes = _INTERNAL_getMetricBuffer(client)?.[0]?.attributes;
+    expect(metricAttributes).toEqual({
+      scope_attribute_1: {
+        value: 1,
+        type: 'integer',
+      },
+      scope_attribute_2: {
+        value: 'test',
+        type: 'string',
+      },
+      scope_attribute_3: {
+        value: 38,
+        unit: 'gigabyte',
+        type: 'integer',
+      },
+    });
+  });
+
+  it('prefers metric attributes over scope attributes', () => {
+    const options = getDefaultTestClientOptions({ dsn: PUBLIC_DSN });
+    const client = new TestClient(options);
+    const scope = new Scope();
+    scope.setClient(client);
+    scope.setAttribute('my-attribute', 42);
+
+    _INTERNAL_captureMetric(
+      { type: 'counter', name: 'test.metric', value: 1, attributes: { 'my-attribute': 43 } },
+      { scope },
+    );
+
+    const metricAttributes = _INTERNAL_getMetricBuffer(client)?.[0]?.attributes;
+    expect(metricAttributes).toEqual({
+      'my-attribute': { value: 43, type: 'integer' },
+    });
+  });
+
   it('flushes metrics buffer when it reaches max size', () => {
     const options = getDefaultTestClientOptions({ dsn: PUBLIC_DSN });
     const client = new TestClient(options);