diff --git a/dev-packages/deno-integration-tests/suites/orchestrion-firebase/test.ts b/dev-packages/deno-integration-tests/suites/orchestrion-firebase/test.ts
new file mode 100644
index 000000000000..e8625ddcac5d
--- /dev/null
+++ b/dev-packages/deno-integration-tests/suites/orchestrion-firebase/test.ts
@@ -0,0 +1,111 @@
+// <reference lib="deno.ns" />
+
+import { tracingChannel } from 'node:diagnostics_channel';
+import type { TransactionEvent } from '@sentry/core';
+import type { DenoClient } from '@sentry/deno';
+import { getCurrentScope, getGlobalScope, getIsolationScope, init, startSpan } from '@sentry/deno';
+import { assert } from 'https://deno.land/std@0.212.0/assert/assert.ts';
+import { assertExists } from 'https://deno.land/std@0.212.0/assert/assert_exists.ts';
+import { assertEquals } from 'https://deno.land/std@0.212.0/assert/assert_equals.ts';
+
+function resetGlobals(): void {
+  getCurrentScope().clear();
+  getCurrentScope().setClient(undefined);
+  getIsolationScope().clear();
+  getGlobalScope().clear();
+}
+
+/** See deno-redis.test.ts — same sink shape, deduped for clarity. */
+function transactionSink(): {
+  beforeSendTransaction: (event: TransactionEvent) => null;
+  waitFor: (predicate: (event: TransactionEvent) => boolean) => Promise<TransactionEvent>;
+} {
+  const transactions: TransactionEvent[] = [];
+  const waiters: { predicate: (e: TransactionEvent) => boolean; resolve: (e: TransactionEvent) => void }[] = [];
+  return {
+    beforeSendTransaction(event) {
+      transactions.push(event);
+      for (let i = waiters.length - 1; i >= 0; i--) {
+        const w = waiters[i]!;
+        if (w.predicate(event)) {
+          waiters.splice(i, 1);
+          w.resolve(event);
+        }
+      }
+      return null;
+    },
+    waitFor(predicate) {
+      const already = transactions.find(predicate);
+      if (already) return Promise.resolve(already);
+      return new Promise<TransactionEvent>(resolve => {
+        waiters.push({ predicate, resolve });
+      });
+    },
+  };
+}
+
+function withTimeout<T>(p: Promise<T>, ms: number, what: string): Promise<T> {
+  let timer: ReturnType<typeof setTimeout> | undefined;
+  const timeout = new Promise<T>((_, reject) => {
+    timer = setTimeout(() => reject(new Error(`Timed out waiting for ${what} after ${ms}ms`)), ms);
+  });
+  return Promise.race([p, timeout]).finally(() => {
+    if (timer !== undefined) clearTimeout(timer);
+  });
+}
+
+Deno.test('firebase instrumentation: included in default integrations (Deno 2.8.0+)', () => {
+  resetGlobals();
+  const client = init({ dsn: 'https://username@domain/123' }) as DenoClient;
+  const names = client.getOptions().integrations.map(i => i.name);
+  assert(names.includes('Firebase'), `Firebase should be in defaults, got ${names.join(', ')}`);
+});
+
+Deno.test('firebase instrumentation: orchestrion @firebase/firestore:add-doc channel produces a nested db span', async () => {
+  resetGlobals();
+  const sink = transactionSink();
+  init({
+    dsn: 'https://username@domain/123',
+    tracesSampleRate: 1,
+    beforeSendTransaction: sink.beforeSendTransaction,
+  });
+
+  const channel = tracingChannel('orchestrion:@firebase/firestore:add-doc');
+
+  // The subscriber reads these off the reference: `path` names the span/collection,
+  // `firestore.app` supplies the namespace and project options, `toJSON().settings`
+  // the server host (omitted here, so no server.address/port attributes).
+  const reference = {
+    path: 'users',
+    type: 'collection',
+    firestore: {
+      app: { name: '[DEFAULT]', options: { projectId: 'demo-project', appId: 'demo-app' } },
+      toJSON: () => ({ settings: {} }),
+    },
+  };
+  const ctx: Record<string, unknown> = { arguments: [reference] };
+
+  startSpan({ name: 'parent', op: 'test' }, () => {
+    channel.start.runStores(ctx, () => undefined);
+    channel.end.publish(ctx);
+    ctx.result = {};
+    channel.asyncStart.runStores(ctx, () => undefined);
+    channel.asyncEnd.publish(ctx);
+  });
+
+  const parent = await withTimeout(
+    sink.waitFor(t => t.transaction === 'parent'),
+    5000,
+    "'parent' transaction",
+  );
+
+  const fsSpan = parent.spans?.find(s => s.op === 'db.query');
+  assertExists(fsSpan, `expected a db.query child span, got ops: ${parent.spans?.map(s => s.op).join(', ')}`);
+  assertEquals(fsSpan!.description, 'addDoc users');
+  assertEquals(fsSpan!.data?.['db.operation.name'], 'addDoc');
+  assertEquals(fsSpan!.data?.['db.collection.name'], 'users');
+  assertEquals(fsSpan!.data?.['db.namespace'], '[DEFAULT]');
+  assertEquals(fsSpan!.data?.['db.system.name'], 'firebase.firestore');
+  assertEquals(fsSpan!.data?.['firebase.firestore.options.projectId'], 'demo-project');
+  assertEquals(fsSpan!.data?.['sentry.origin'], 'auto.firebase.orchestrion.firestore');
+});
diff --git a/packages/deno/src/index.ts b/packages/deno/src/index.ts
index de262530f6da..28ef625c3cf5 100644
--- a/packages/deno/src/index.ts
+++ b/packages/deno/src/index.ts
@@ -120,6 +120,7 @@ export {
   awsChannelIntegration,
   dataloaderChannelIntegration,
   expressChannelIntegration,
+  firebaseChannelIntegration,
   genericPoolChannelIntegration,
   graphqlDiagnosticsChannelIntegration,
   hapiChannelIntegration,
diff --git a/packages/deno/src/sdk.ts b/packages/deno/src/sdk.ts
index 9f2bcdd77c38..0165e49b9c45 100644
--- a/packages/deno/src/sdk.ts
+++ b/packages/deno/src/sdk.ts
@@ -15,6 +15,7 @@ import {
   amqplibChannelIntegration,
   awsChannelIntegration,
   expressChannelIntegration,
+  firebaseChannelIntegration,
   genericPoolChannelIntegration,
   graphqlDiagnosticsChannelIntegration,
   hapiChannelIntegration,
@@ -89,6 +90,7 @@ export function getDefaultIntegrations(_options: Options): Integration[] {
           amqplibChannelIntegration(),
           awsChannelIntegration(),
           expressChannelIntegration(),
+          firebaseChannelIntegration(),
           genericPoolChannelIntegration(),
           hapiChannelIntegration(),
           kafkajsChannelIntegration(),
diff --git a/packages/deno/test/__snapshots__/mod.test.ts.snap b/packages/deno/test/__snapshots__/mod.test.ts.snap
index d878daee8677..c8c91ca9317c 100644
--- a/packages/deno/test/__snapshots__/mod.test.ts.snap
+++ b/packages/deno/test/__snapshots__/mod.test.ts.snap
@@ -119,6 +119,7 @@ snapshot[`captureException 1`] = `
       "Amqplib",
       "Aws",
       "Express",
+      "Firebase",
       "GenericPool",
       "Hapi",
       "Kafka",
@@ -210,6 +211,7 @@ snapshot[`captureMessage 1`] = `
       "Amqplib",
       "Aws",
       "Express",
+      "Firebase",
       "GenericPool",
       "Hapi",
       "Kafka",
@@ -308,6 +310,7 @@ snapshot[`captureMessage twice 1`] = `
       "Amqplib",
       "Aws",
       "Express",
+      "Firebase",
       "GenericPool",
       "Hapi",
       "Kafka",
@@ -413,6 +416,7 @@ snapshot[`captureMessage twice 2`] = `
       "Amqplib",
       "Aws",
       "Express",
+      "Firebase",
       "GenericPool",
       "Hapi",
       "Kafka",