diff --git a/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm b/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm
index 1a93e7d409bc41..73948d77e78190 100644
--- a/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm
+++ b/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm
@@ -55,7 +55,6 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
   if (self.newArchEnabled || self.fabricEnabled) {
     [RCTComponentViewFactory currentComponentViewFactory].thirdPartyFabricComponentsProvider = self;
   }
-  [self customizeRootView:(RCTRootView *)rootView];
 
   self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
   UIViewController *rootViewController = [self createRootViewController];
@@ -253,6 +252,10 @@ - (RCTRootViewFactory *)createRCTRootViewFactory
     return [weakSelf createBridgeWithDelegate:delegate launchOptions:launchOptions];
   };
 
+  configuration.customizeRootView = ^(UIView * _Nonnull rootView) {
+    return [weakSelf customizeRootView:(RCTRootView *)rootView];
+  };
+
   configuration.sourceURLForBridge = ^NSURL *_Nullable(RCTBridge *_Nonnull bridge)
   {
     return [weakSelf sourceURLForBridge:bridge];
diff --git a/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.h b/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.h
index 6c60403ea297c7..ebec3f45e46c44 100644
--- a/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.h
+++ b/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.h
@@ -24,6 +24,7 @@ typedef UIView *_Nonnull (
     ^RCTCreateRootViewWithBridgeBlock)(RCTBridge *bridge, NSString *moduleName, NSDictionary *initProps);
 typedef RCTBridge *_Nonnull (
     ^RCTCreateBridgeWithDelegateBlock)(id<RCTBridgeDelegate> delegate, NSDictionary *launchOptions);
+typedef void (^RCTCustomizeRootViewBlock)(UIView *rootView);
 typedef NSURL *_Nullable (^RCTSourceURLForBridgeBlock)(RCTBridge *bridge);
 typedef NSURL *_Nullable (^RCTBundleURLBlock)(void);
 typedef NSArray<id<RCTBridgeModule>> *_Nonnull (^RCTExtraModulesForBridgeBlock)(RCTBridge *bridge);
@@ -99,6 +100,13 @@ typedef void (^RCTHostDidReceiveJSErrorStackBlock)(
  */
 @property (nonatomic, nullable) RCTCreateBridgeWithDelegateBlock createBridgeWithDelegate;
 
+/**
+ * Block that allows to customize the rootView that is passed to React Native.
+ *
+ * @parameter: rootView - The root view to customize.
+ */
+@property (nonatomic, nullable) RCTCustomizeRootViewBlock customizeRootView;
+
 #pragma mark - RCTBridgeDelegate blocks
 
 /**
diff --git a/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm b/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm
index 2ae542f450cd20..377e5efeae8030 100644
--- a/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm
+++ b/packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm
@@ -150,17 +150,25 @@ - (UIView *)viewWithModuleName:(NSString *)moduleName
         sizeMeasureMode:RCTSurfaceSizeMeasureModeWidthExact | RCTSurfaceSizeMeasureModeHeightExact];
 
     surfaceHostingProxyRootView.backgroundColor = [UIColor systemBackgroundColor];
+    if (self->_configuration.customizeRootView != nil) {
+      self->_configuration.customizeRootView(surfaceHostingProxyRootView);
+    }
     return surfaceHostingProxyRootView;
   }
 
   [self createBridgeIfNeeded:launchOptions];
   [self createBridgeAdapterIfNeeded];
 
+  UIView *rootView;
   if (self->_configuration.createRootViewWithBridge != nil) {
-    return self->_configuration.createRootViewWithBridge(self.bridge, moduleName, initProps);
+    rootView = self->_configuration.createRootViewWithBridge(self.bridge, moduleName, initProps);
+  } else {
+    rootView = [self createRootViewWithBridge:self.bridge moduleName:moduleName initProps:initProps];
   }
-
-  return [self createRootViewWithBridge:self.bridge moduleName:moduleName initProps:initProps];
+  if (self->_configuration.customizeRootView != nil) {
+    self->_configuration.customizeRootView(rootView);
+  }
+  return rootView;
 }
 
 - (RCTBridge *)createBridgeWithDelegate:(id<RCTBridgeDelegate>)delegate launchOptions:(NSDictionary *)launchOptions