diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/CustomClientBuilder.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/CustomClientBuilder.kt
similarity index 54%
rename from packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/CustomClientBuilder.java
rename to packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/CustomClientBuilder.kt
index db81d653baea..632dae301509 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/CustomClientBuilder.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/CustomClientBuilder.kt
@@ -5,10 +5,10 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.modules.network;
+package com.facebook.react.modules.network
 
-import okhttp3.OkHttpClient;
+import okhttp3.OkHttpClient
 
-public interface CustomClientBuilder {
-  public void apply(OkHttpClient.Builder builder);
+public fun interface CustomClientBuilder {
+  public fun apply(builder: OkHttpClient.Builder)
 }
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.kt
similarity index 67%
rename from packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.java
rename to packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.kt
index 6a2cebfe2bb8..08429207ac66 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.kt
@@ -5,14 +5,14 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.modules.network;
+package com.facebook.react.modules.network
 
-import okhttp3.Interceptor;
+import okhttp3.Interceptor
 
 /**
  * Classes implementing this interface return a new {@link Interceptor} when the {@link #create}
  * method is called.
  */
-public interface NetworkInterceptorCreator {
-  Interceptor create();
+public fun interface NetworkInterceptorCreator {
+  public fun create(): Interceptor
 }
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.kt
similarity index 54%
rename from packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.java
rename to packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.kt
index 714ea9f902ae..80cb92f340a1 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.kt
@@ -5,8 +5,8 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.modules.network;
+package com.facebook.react.modules.network
 
-public interface ProgressListener {
-  void onProgress(long bytesWritten, long contentLength, boolean done);
+public fun interface ProgressListener {
+  public fun onProgress(bytesWritten: Long, contentLength: Long, done: Boolean)
 }