diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.kt
similarity index 66%
rename from packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.java
rename to packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.kt
index 0f392cc267c..93912ec4c0e 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.kt
@@ -5,9 +5,9 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.uimanager.layoutanimation;
+package com.facebook.react.uimanager.layoutanimation
 
 /** Listener invoked when a layout animation has completed. */
-public interface LayoutAnimationListener {
-  void onAnimationEnd();
+public fun interface LayoutAnimationListener {
+  public fun onAnimationEnd()
 }
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.kt
similarity index 82%
rename from packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.java
rename to packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.kt
index fe128d19c1b..40aca72cd94 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.kt
@@ -5,10 +5,10 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.uimanager.layoutanimation;
+package com.facebook.react.uimanager.layoutanimation
 
 /** Interface for an animation type that takes care of updating the view layout. */
-/* package */ interface LayoutHandlingAnimation {
+internal interface LayoutHandlingAnimation {
   /**
    * Notifies the animation of a layout update in case one occurs during the animation. This avoids
    * animating the view to the old layout since it's no longer correct; instead the animation should
@@ -19,5 +19,5 @@ package com.facebook.react.uimanager.layoutanimation;
    * @param width the new width value for the view
    * @param height the new height value for the view
    */
-  void onLayoutUpdate(int x, int y, int width, int height);
+  fun onLayoutUpdate(x: Int, y: Int, width: Int, height: Int)
 }