diff --git a/packages/shared/forks/ReactFeatureFlags.native-fabric-fb.js b/packages/shared/forks/ReactFeatureFlags.native-fabric-fb.js
index bd557015195fb..1c012dd10a848 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-fabric-fb.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-fabric-fb.js
@@ -20,7 +20,7 @@ export const enableSuspense = false;
 export const warnAboutDeprecatedLifecycles = false;
 export const warnAboutLegacyContextAPI = __DEV__;
 export const replayFailedUnitOfWorkWithInvokeGuardedCallback = __DEV__;
-export const enableProfilerTimer = __DEV__;
+export const enableProfilerTimer = __PROFILE__;
 
 // Only used in www builds.
 export function addUserTimingListener() {
diff --git a/packages/shared/forks/ReactFeatureFlags.native-fb.js b/packages/shared/forks/ReactFeatureFlags.native-fb.js
index b0fdc77f3a51e..4efb4caf07df6 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-fb.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-fb.js
@@ -20,12 +20,12 @@ export const {
   debugRenderPhaseSideEffectsForStrictMode,
   warnAboutDeprecatedLifecycles,
   replayFailedUnitOfWorkWithInvokeGuardedCallback,
-  enableProfilerTimer,
 } = require('ReactFeatureFlags');
 
 // The rest of the flags are static for better dead code elimination.
 export const enableUserTimingAPI = __DEV__;
 export const warnAboutLegacyContextAPI = __DEV__;
+export const enableProfilerTimer = __PROFILE__;
 
 // Only used in www builds.
 export function addUserTimingListener() {
diff --git a/packages/shared/forks/ReactFeatureFlags.persistent.js b/packages/shared/forks/ReactFeatureFlags.persistent.js
index 88773cf900b3b..142f1449fde2d 100644
--- a/packages/shared/forks/ReactFeatureFlags.persistent.js
+++ b/packages/shared/forks/ReactFeatureFlags.persistent.js
@@ -20,7 +20,7 @@ export const enableSuspense = false;
 export const warnAboutDeprecatedLifecycles = false;
 export const warnAboutLegacyContextAPI = false;
 export const replayFailedUnitOfWorkWithInvokeGuardedCallback = __DEV__;
-export const enableProfilerTimer = false;
+export const enableProfilerTimer = __PROFILE__;
 
 // Only used in www builds.
 export function addUserTimingListener() {
diff --git a/packages/shared/forks/ReactFeatureFlags.www.js b/packages/shared/forks/ReactFeatureFlags.www.js
index a50191a17607b..cebcf5f5cc8ad 100644
--- a/packages/shared/forks/ReactFeatureFlags.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.www.js
@@ -18,7 +18,6 @@ export const {
   enableGetDerivedStateFromCatch,
   replayFailedUnitOfWorkWithInvokeGuardedCallback,
   warnAboutDeprecatedLifecycles,
-  enableProfilerTimer,
 } = require('ReactFeatureFlags');
 
 // The rest of the flags are static for better dead code elimination.
@@ -32,6 +31,8 @@ export const warnAboutLegacyContextAPI = __DEV__;
 // as long as there is more than a single listener.
 export let enableUserTimingAPI = __DEV__;
 
+export const enableProfilerTimer = __PROFILE__;
+
 let refCount = 0;
 export function addUserTimingListener() {
   if (__DEV__) {
diff --git a/scripts/rollup/build.js b/scripts/rollup/build.js
index 42f5e46d9e255..1b7c767aba78f 100644
--- a/scripts/rollup/build.js
+++ b/scripts/rollup/build.js
@@ -42,11 +42,13 @@ const {
   NODE_PROFILING,
   FB_WWW_DEV,
   FB_WWW_PROD,
+  FB_WWW_PROFILING,
   RN_OSS_DEV,
   RN_OSS_PROD,
   RN_OSS_PROFILING,
   RN_FB_DEV,
   RN_FB_PROD,
+  RN_FB_PROFILING,
 } = Bundles.bundleTypes;
 
 const requestedBundleTypes = (argv.type || '')
@@ -87,6 +89,7 @@ function getBabelConfig(updateBabelOptions, bundleType, filename) {
   switch (bundleType) {
     case FB_WWW_DEV:
     case FB_WWW_PROD:
+    case FB_WWW_PROFILING:
       return Object.assign({}, options, {
         plugins: options.plugins.concat([
           // Minify invariant messages
@@ -100,6 +103,7 @@ function getBabelConfig(updateBabelOptions, bundleType, filename) {
     case RN_OSS_PROFILING:
     case RN_FB_DEV:
     case RN_FB_PROD:
+    case RN_FB_PROFILING:
       return Object.assign({}, options, {
         plugins: options.plugins.concat([
           // Wrap warning() calls in a __DEV__ check so they are stripped from production.
@@ -159,11 +163,13 @@ function getFormat(bundleType) {
     case NODE_PROFILING:
     case FB_WWW_DEV:
     case FB_WWW_PROD:
+    case FB_WWW_PROFILING:
     case RN_OSS_DEV:
     case RN_OSS_PROD:
     case RN_OSS_PROFILING:
     case RN_FB_DEV:
     case RN_FB_PROD:
+    case RN_FB_PROFILING:
       return `cjs`;
   }
 }
@@ -190,6 +196,8 @@ function getFilename(name, globalName, bundleType) {
     case RN_OSS_PROD:
     case RN_FB_PROD:
       return `${globalName}-prod.js`;
+    case FB_WWW_PROFILING:
+    case RN_FB_PROFILING:
     case RN_OSS_PROFILING:
       return `${globalName}-profiling.js`;
   }
@@ -207,9 +215,11 @@ function isProductionBundleType(bundleType) {
     case NODE_PROD:
     case NODE_PROFILING:
     case FB_WWW_PROD:
+    case FB_WWW_PROFILING:
     case RN_OSS_PROD:
     case RN_OSS_PROFILING:
     case RN_FB_PROD:
+    case RN_FB_PROFILING:
       return true;
     default:
       throw new Error(`Unknown type: ${bundleType}`);
@@ -229,7 +239,9 @@ function isProfilingBundleType(bundleType) {
     case UMD_DEV:
     case UMD_PROD:
       return false;
+    case FB_WWW_PROFILING:
     case NODE_PROFILING:
+    case RN_FB_PROFILING:
     case RN_OSS_PROFILING:
       return true;
     default:
@@ -267,13 +279,17 @@ function getPlugins(
   const isProduction = isProductionBundleType(bundleType);
   const isProfiling = isProfilingBundleType(bundleType);
   const isUMDBundle = bundleType === UMD_DEV || bundleType === UMD_PROD;
-  const isFBBundle = bundleType === FB_WWW_DEV || bundleType === FB_WWW_PROD;
+  const isFBBundle =
+    bundleType === FB_WWW_DEV ||
+    bundleType === FB_WWW_PROD ||
+    bundleType === FB_WWW_PROFILING;
   const isRNBundle =
     bundleType === RN_OSS_DEV ||
     bundleType === RN_OSS_PROD ||
     bundleType === RN_OSS_PROFILING ||
     bundleType === RN_FB_DEV ||
-    bundleType === RN_FB_PROD;
+    bundleType === RN_FB_PROD ||
+    bundleType === RN_FB_PROFILING;
   const shouldStayReadable = isFBBundle || isRNBundle || forcePrettyOutput;
   return [
     // Extract error codes from invariant() messages into a file.
@@ -404,7 +420,11 @@ async function createBundle(bundle, bundleType) {
   const packageName = Packaging.getPackageName(bundle.entry);
 
   let resolvedEntry = require.resolve(bundle.entry);
-  if (bundleType === FB_WWW_DEV || bundleType === FB_WWW_PROD) {
+  if (
+    bundleType === FB_WWW_DEV ||
+    bundleType === FB_WWW_PROD ||
+    bundleType === FB_WWW_PROFILING
+  ) {
     const resolvedFBEntry = resolvedEntry.replace('.js', '.fb.js');
     if (fs.existsSync(resolvedFBEntry)) {
       resolvedEntry = resolvedFBEntry;
@@ -451,7 +471,10 @@ async function createBundle(bundle, bundleType) {
       bundle.modulesToStub
     ),
     // We can't use getters in www.
-    legacy: bundleType === FB_WWW_DEV || bundleType === FB_WWW_PROD,
+    legacy:
+      bundleType === FB_WWW_DEV ||
+      bundleType === FB_WWW_PROD ||
+      bundleType === FB_WWW_PROFILING,
   };
   const [mainOutputPath, ...otherOutputPaths] = Packaging.getBundleOutputPaths(
     bundleType,
@@ -563,11 +586,13 @@ async function buildEverything() {
     await createBundle(bundle, NODE_PROFILING);
     await createBundle(bundle, FB_WWW_DEV);
     await createBundle(bundle, FB_WWW_PROD);
+    await createBundle(bundle, FB_WWW_PROFILING);
     await createBundle(bundle, RN_OSS_DEV);
     await createBundle(bundle, RN_OSS_PROD);
     await createBundle(bundle, RN_OSS_PROFILING);
     await createBundle(bundle, RN_FB_DEV);
     await createBundle(bundle, RN_FB_PROD);
+    await createBundle(bundle, RN_FB_PROFILING);
   }
 
   await Packaging.copyAllShims();
diff --git a/scripts/rollup/bundles.js b/scripts/rollup/bundles.js
index a9fc687f75197..54fa892cc0d47 100644
--- a/scripts/rollup/bundles.js
+++ b/scripts/rollup/bundles.js
@@ -8,11 +8,13 @@ const bundleTypes = {
   NODE_PROFILING: 'NODE_PROFILING',
   FB_WWW_DEV: 'FB_WWW_DEV',
   FB_WWW_PROD: 'FB_WWW_PROD',
+  FB_WWW_PROFILING: 'FB_WWW_PROFILING',
   RN_OSS_DEV: 'RN_OSS_DEV',
   RN_OSS_PROD: 'RN_OSS_PROD',
   RN_OSS_PROFILING: 'RN_OSS_PROFILING',
   RN_FB_DEV: 'RN_FB_DEV',
   RN_FB_PROD: 'RN_FB_PROD',
+  RN_FB_PROFILING: 'RN_FB_PROFILING',
 };
 
 const UMD_DEV = bundleTypes.UMD_DEV;
@@ -22,11 +24,13 @@ const NODE_PROD = bundleTypes.NODE_PROD;
 const NODE_PROFILING = bundleTypes.NODE_PROFILING;
 const FB_WWW_DEV = bundleTypes.FB_WWW_DEV;
 const FB_WWW_PROD = bundleTypes.FB_WWW_PROD;
+const FB_WWW_PROFILING = bundleTypes.FB_WWW_PROFILING;
 const RN_OSS_DEV = bundleTypes.RN_OSS_DEV;
 const RN_OSS_PROD = bundleTypes.RN_OSS_PROD;
 const RN_OSS_PROFILING = bundleTypes.RN_OSS_PROFILING;
 const RN_FB_DEV = bundleTypes.RN_FB_DEV;
 const RN_FB_PROD = bundleTypes.RN_FB_PROD;
+const RN_FB_PROFILING = bundleTypes.RN_FB_PROFILING;
 
 const moduleTypes = {
   ISOMORPHIC: 'ISOMORPHIC',
@@ -76,6 +80,7 @@ const bundles = [
       NODE_PROFILING,
       FB_WWW_DEV,
       FB_WWW_PROD,
+      FB_WWW_PROFILING,
     ],
     moduleType: RENDERER,
     entry: 'react-dom',
@@ -160,7 +165,7 @@ const bundles = [
   /******* React Native *******/
   {
     label: 'native-fb',
-    bundleTypes: [RN_FB_DEV, RN_FB_PROD],
+    bundleTypes: [RN_FB_DEV, RN_FB_PROD, RN_FB_PROFILING],
     moduleType: RENDERER,
     entry: 'react-native-renderer',
     global: 'ReactNativeRenderer',
@@ -201,7 +206,7 @@ const bundles = [
   /******* React Native Fabric *******/
   {
     label: 'native-fabric-fb',
-    bundleTypes: [RN_FB_DEV, RN_FB_PROD],
+    bundleTypes: [RN_FB_DEV, RN_FB_PROD, RN_FB_PROFILING],
     moduleType: RENDERER,
     entry: 'react-native-renderer/fabric',
     global: 'ReactFabric',
diff --git a/scripts/rollup/forks.js b/scripts/rollup/forks.js
index 64def9eb877ec..827050ac32def 100644
--- a/scripts/rollup/forks.js
+++ b/scripts/rollup/forks.js
@@ -8,11 +8,13 @@ const UMD_DEV = bundleTypes.UMD_DEV;
 const UMD_PROD = bundleTypes.UMD_PROD;
 const FB_WWW_DEV = bundleTypes.FB_WWW_DEV;
 const FB_WWW_PROD = bundleTypes.FB_WWW_PROD;
+const FB_WWW_PROFILING = bundleTypes.FB_WWW_PROFILING;
 const RN_OSS_DEV = bundleTypes.RN_OSS_DEV;
 const RN_OSS_PROD = bundleTypes.RN_OSS_PROD;
 const RN_OSS_PROFILING = bundleTypes.RN_OSS_PROFILING;
 const RN_FB_DEV = bundleTypes.RN_FB_DEV;
 const RN_FB_PROD = bundleTypes.RN_FB_PROD;
+const RN_FB_PROFILING = bundleTypes.RN_FB_PROFILING;
 const RENDERER = moduleTypes.RENDERER;
 const RECONCILER = moduleTypes.RECONCILER;
 
@@ -43,6 +45,7 @@ const forks = Object.freeze({
         switch (bundleType) {
           case RN_FB_DEV:
           case RN_FB_PROD:
+          case RN_FB_PROFILING:
             return 'shared/forks/ReactFeatureFlags.native-fb.js';
           case RN_OSS_DEV:
           case RN_OSS_PROD:
@@ -57,6 +60,7 @@ const forks = Object.freeze({
         switch (bundleType) {
           case RN_FB_DEV:
           case RN_FB_PROD:
+          case RN_FB_PROFILING:
             return 'shared/forks/ReactFeatureFlags.native-fabric-fb.js';
           case RN_OSS_DEV:
           case RN_OSS_PROD:
@@ -75,6 +79,7 @@ const forks = Object.freeze({
         switch (bundleType) {
           case FB_WWW_DEV:
           case FB_WWW_PROD:
+          case FB_WWW_PROFILING:
             return 'shared/forks/ReactFeatureFlags.www.js';
         }
     }
@@ -85,6 +90,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         return 'shared/forks/ReactScheduler.www.js';
       default:
         return null;
@@ -96,6 +102,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         return 'shared/forks/invariant.www.js';
       default:
         return null;
@@ -107,6 +114,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         return 'shared/forks/lowPriorityWarning.www.js';
       default:
         return null;
@@ -118,6 +126,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         return 'shared/forks/warning.www.js';
       default:
         return null;
@@ -130,6 +139,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         return 'react/src/forks/ReactCurrentOwner.www.js';
       default:
         return null;
@@ -141,6 +151,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         return 'shared/forks/invokeGuardedCallback.www.js';
       default:
         return null;
@@ -152,6 +163,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         // Use the www fork which shows an error dialog.
         return 'react-reconciler/src/forks/ReactFiberErrorDialog.www.js';
       case RN_OSS_DEV:
@@ -159,6 +171,7 @@ const forks = Object.freeze({
       case RN_OSS_PROFILING:
       case RN_FB_DEV:
       case RN_FB_PROD:
+      case RN_FB_PROFILING:
         switch (entry) {
           case 'react-native-renderer':
           case 'react-native-renderer/fabric':
@@ -204,6 +217,7 @@ const forks = Object.freeze({
     switch (bundleType) {
       case FB_WWW_DEV:
       case FB_WWW_PROD:
+      case FB_WWW_PROFILING:
         // Use the www fork which is integrated with TimeSlice profiling.
         return 'react-dom/src/events/forks/EventListener-www.js';
       default:
diff --git a/scripts/rollup/packaging.js b/scripts/rollup/packaging.js
index 507b0d48cf8d8..d2c8c96ad289b 100644
--- a/scripts/rollup/packaging.js
+++ b/scripts/rollup/packaging.js
@@ -17,11 +17,13 @@ const {
   NODE_PROFILING,
   FB_WWW_DEV,
   FB_WWW_PROD,
+  FB_WWW_PROFILING,
   RN_OSS_DEV,
   RN_OSS_PROD,
   RN_OSS_PROFILING,
   RN_FB_DEV,
   RN_FB_PROD,
+  RN_FB_PROFILING,
 } = Bundles.bundleTypes;
 
 function getPackageName(name) {
@@ -45,6 +47,7 @@ function getBundleOutputPaths(bundleType, filename, packageName) {
       ];
     case FB_WWW_DEV:
     case FB_WWW_PROD:
+    case FB_WWW_PROFILING:
       return [`build/facebook-www/${filename}`];
     case RN_OSS_DEV:
     case RN_OSS_PROD:
@@ -57,6 +60,7 @@ function getBundleOutputPaths(bundleType, filename, packageName) {
       }
     case RN_FB_DEV:
     case RN_FB_PROD:
+    case RN_FB_PROFILING:
       switch (packageName) {
         case 'react-native-renderer':
           return [`build/react-native/fb/${filename}`];
diff --git a/scripts/rollup/wrappers.js b/scripts/rollup/wrappers.js
index 36bae238d038e..3f7eacf4871a7 100644
--- a/scripts/rollup/wrappers.js
+++ b/scripts/rollup/wrappers.js
@@ -10,11 +10,13 @@ const NODE_PROD = Bundles.bundleTypes.NODE_PROD;
 const NODE_PROFILING = Bundles.bundleTypes.NODE_PROFILING;
 const FB_WWW_DEV = Bundles.bundleTypes.FB_WWW_DEV;
 const FB_WWW_PROD = Bundles.bundleTypes.FB_WWW_PROD;
+const FB_WWW_PROFILING = Bundles.bundleTypes.FB_WWW_PROFILING;
 const RN_OSS_DEV = Bundles.bundleTypes.RN_OSS_DEV;
 const RN_OSS_PROD = Bundles.bundleTypes.RN_OSS_PROD;
 const RN_OSS_PROFILING = Bundles.bundleTypes.RN_OSS_PROFILING;
 const RN_FB_DEV = Bundles.bundleTypes.RN_FB_DEV;
 const RN_FB_PROD = Bundles.bundleTypes.RN_FB_PROD;
+const RN_FB_PROFILING = Bundles.bundleTypes.RN_FB_PROFILING;
 
 const RECONCILER = Bundles.moduleTypes.RECONCILER;
 
@@ -141,6 +143,19 @@ ${license}
  * @preserve-invariant-messages
  */
 
+${source}`;
+  },
+
+  /****************** FB_WWW_PROFILING ******************/
+  [FB_WWW_PROFILING](source, globalName, filename, moduleType) {
+    return `/**
+${license}
+ *
+ * @noflow
+ * @preventMunge
+ * @preserve-invariant-messages
+ */
+
 ${source}`;
   },
 
@@ -221,6 +236,19 @@ ${license}
  * ${'@gen' + 'erated'}
  */
 
+${source}`;
+  },
+
+  /****************** RN_FB_PROFILING ******************/
+  [RN_FB_PROFILING](source, globalName, filename, moduleType) {
+    return `/**
+${license}
+ *
+ * @noflow
+ * @preventMunge
+ * ${'@gen' + 'erated'}
+ */
+
 ${source}`;
   },
 };