diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java
index 52f635eaa6aac0..c4e7b0c5cd3474 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java
@@ -16,6 +16,7 @@
 import android.widget.EditText;
 import androidx.annotation.Nullable;
 import androidx.core.view.ViewCompat;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.bridge.CatalystInstance;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReactNoCrashSoftException;
@@ -26,6 +27,7 @@
 import com.facebook.react.uimanager.events.EventDispatcherProvider;
 
 /** Helper class for {@link UIManager}. */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public class UIManagerHelper {
 
   private static final String TAG = UIManagerHelper.class.getName();
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java
index ee4f7969235a01..be8c69379f741c 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java
@@ -9,12 +9,14 @@
 
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.ImageView;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.uimanager.events.TouchEventType;
 import java.util.Map;
 
 /** Constants exposed to JS from {@link UIManagerModule}. */
-/* package */ class UIManagerModuleConstants {
+/* package */ @Nullsafe(Nullsafe.Mode.LOCAL)
+class UIManagerModuleConstants {
 
   public static final String ACTION_DISMISSED = "dismissed";
   public static final String ACTION_ITEM_SELECTED = "itemSelected";
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
index 098b7e15fa976e..4aa4c3900968f9 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
@@ -10,6 +10,7 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 import com.facebook.common.logging.FLog;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.common.build.ReactBuildConfig;
 import com.facebook.react.config.ReactFeatureFlags;
@@ -24,6 +25,7 @@
  * Helps generate constants map for {@link UIManagerModule} by collecting and merging constants from
  * registered view managers.
  */
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public class UIManagerModuleConstantsHelper {
   private static final String TAG = "UIManagerModuleConstantsHelper";
   private static final String BUBBLING_EVENTS_KEY = "bubblingEventTypes";