diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.java
deleted file mode 100644
index a7ef7818f51..00000000000
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.java
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.bridge;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-/** Interface for a mutable map. Used to pass arguments from Java to JS. */
-public interface WritableMap extends ReadableMap {
-
-  void putNull(@NonNull String key);
-
-  void putBoolean(@NonNull String key, boolean value);
-
-  void putDouble(@NonNull String key, double value);
-
-  void putInt(@NonNull String key, int value);
-
-  void putLong(@NonNull String key, long value);
-
-  void putString(@NonNull String key, @Nullable String value);
-
-  void putArray(@NonNull String key, @Nullable ReadableArray value);
-
-  void putMap(@NonNull String key, @Nullable ReadableMap value);
-
-  void merge(@NonNull ReadableMap source);
-
-  WritableMap copy();
-}
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.kt
new file mode 100644
index 00000000000..a7f71bf4840
--- /dev/null
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.kt
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.bridge
+
+/** Interface for a mutable map. Used to pass arguments from Kotlin to JS. */
+public interface WritableMap : ReadableMap {
+  public fun copy(): WritableMap
+
+  public fun merge(source: ReadableMap)
+
+  public fun putArray(key: String, value: ReadableArray?)
+
+  public fun putBoolean(key: String, value: Boolean)
+
+  public fun putDouble(key: String, value: Double)
+
+  public fun putInt(key: String, value: Int)
+
+  public fun putLong(key: String, value: Long)
+
+  public fun putMap(key: String, value: ReadableMap?)
+
+  public fun putNull(key: String)
+
+  public fun putString(key: String, value: String?)
+}