diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java
index 53b8e507d4a79c..42e815bc6d8b5a 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java
@@ -1358,6 +1358,15 @@ private ReactApplicationContext createReactContext(
 
     reactContext.initializeWithInstance(catalystInstance);
 
+    if (ReactFeatureFlags.unstable_useRuntimeSchedulerAlways) {
+      // On Old Architecture, we need to initialize the Native Runtime Scheduler so that
+      // the `nativeRuntimeScheduler` object is registered on JS.
+      // On New Architecture, this is normally triggered by instantiate a TurboModuleManager.
+      // Here we invoke getRuntimeScheduler() to trigger the creation of it regardless of the
+      // architecture so it will always be there.
+      catalystInstance.getRuntimeScheduler();
+    }
+
     if (ReactFeatureFlags.useTurboModules && mTMMDelegateBuilder != null) {
       TurboModuleManagerDelegate tmmDelegate =
           mTMMDelegateBuilder
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java
index 3ee102049179f2..c4f7ef5248cb2b 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java
@@ -50,6 +50,13 @@ public class ReactFeatureFlags {
    */
   public static volatile boolean unstable_useFabricInterop = false;
 
+  /**
+   * Should this application always use the Native RuntimeScheduler? If yes, we'll be instantiating
+   * it over all the architectures (both Old and New). This is intentionally set to true as we want
+   * to use it more as a kill-switch to turn off this feature to potentially debug issues.
+   */
+  public static volatile boolean unstable_useRuntimeSchedulerAlways = true;
+
   /**
    * Feature flag to enable the new bridgeless architecture. Note: Enabling this will force enable
    * the following flags: `useTurboModules` & `enableFabricRenderer`.