diff --git a/packages/gradle-plugin/gradle/libs.versions.toml b/packages/gradle-plugin/gradle/libs.versions.toml
index 715209b8beeb..25e4ee62a539 100644
--- a/packages/gradle-plugin/gradle/libs.versions.toml
+++ b/packages/gradle-plugin/gradle/libs.versions.toml
@@ -4,7 +4,7 @@ gson = "2.8.9"
 guava = "31.0.1-jre"
 javapoet = "1.13.0"
 junit = "4.13.2"
-kotlin = "1.9.24"
+kotlin = "2.0.21"
 assertj = "3.25.1"
 
 [libraries]
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/build.gradle.kts b/packages/gradle-plugin/react-native-gradle-plugin/build.gradle.kts
index 6669e9e3b6d4..022f60c29f42 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/build.gradle.kts
+++ b/packages/gradle-plugin/react-native-gradle-plugin/build.gradle.kts
@@ -6,6 +6,8 @@
  */
 
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
@@ -60,10 +62,10 @@ java { targetCompatibility = JavaVersion.VERSION_11 }
 kotlin { jvmToolchain(17) }
 
 tasks.withType<KotlinCompile>().configureEach {
-  kotlinOptions {
-    apiVersion = "1.6"
+  compilerOptions {
+    apiVersion.set(KotlinVersion.KOTLIN_1_7)
     // See comment above on JDK 11 support
-    jvmTarget = "11"
+    jvmTarget.set(JvmTarget.JVM_11)
     allWarningsAsErrors =
         project.properties["enableWarningsAsErrors"]?.toString()?.toBoolean() ?: false
   }
diff --git a/packages/gradle-plugin/settings-plugin/build.gradle.kts b/packages/gradle-plugin/settings-plugin/build.gradle.kts
index 40e094ee48de..8f5ae862d385 100644
--- a/packages/gradle-plugin/settings-plugin/build.gradle.kts
+++ b/packages/gradle-plugin/settings-plugin/build.gradle.kts
@@ -6,6 +6,8 @@
  */
 
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
@@ -50,10 +52,10 @@ java { targetCompatibility = JavaVersion.VERSION_11 }
 kotlin { jvmToolchain(17) }
 
 tasks.withType<KotlinCompile>().configureEach {
-  kotlinOptions {
-    apiVersion = "1.6"
+  compilerOptions {
+    apiVersion.set(KotlinVersion.KOTLIN_1_7)
     // See comment above on JDK 11 support
-    jvmTarget = "11"
+    jvmTarget.set(JvmTarget.JVM_11)
     allWarningsAsErrors =
         project.properties["enableWarningsAsErrors"]?.toString()?.toBoolean() ?: false
   }
diff --git a/packages/gradle-plugin/shared-testutil/build.gradle.kts b/packages/gradle-plugin/shared-testutil/build.gradle.kts
index 30a1124ebb68..b3c0204b0f50 100644
--- a/packages/gradle-plugin/shared-testutil/build.gradle.kts
+++ b/packages/gradle-plugin/shared-testutil/build.gradle.kts
@@ -6,6 +6,8 @@
  */
 
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins { alias(libs.plugins.kotlin.jvm) }
@@ -21,9 +23,10 @@ java { targetCompatibility = JavaVersion.VERSION_11 }
 kotlin { jvmToolchain(17) }
 
 tasks.withType<KotlinCompile>().configureEach {
-  kotlinOptions {
-    apiVersion = "1.6"
-    jvmTarget = "11"
+  compilerOptions {
+    apiVersion.set(KotlinVersion.KOTLIN_1_7)
+    // See comment above on JDK 11 support
+    jvmTarget.set(JvmTarget.JVM_11)
     allWarningsAsErrors =
         project.properties["enableWarningsAsErrors"]?.toString()?.toBoolean() ?: false
   }
diff --git a/packages/gradle-plugin/shared/build.gradle.kts b/packages/gradle-plugin/shared/build.gradle.kts
index f7f55f5f2f13..b705a7c6997d 100644
--- a/packages/gradle-plugin/shared/build.gradle.kts
+++ b/packages/gradle-plugin/shared/build.gradle.kts
@@ -6,6 +6,8 @@
  */
 
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins { alias(libs.plugins.kotlin.jvm) }
@@ -27,9 +29,10 @@ java { targetCompatibility = JavaVersion.VERSION_11 }
 kotlin { jvmToolchain(17) }
 
 tasks.withType<KotlinCompile>().configureEach {
-  kotlinOptions {
-    apiVersion = "1.6"
-    jvmTarget = "11"
+  compilerOptions {
+    apiVersion.set(KotlinVersion.KOTLIN_1_7)
+    // See comment above on JDK 11 support
+    jvmTarget.set(JvmTarget.JVM_11)
     allWarningsAsErrors =
         project.properties["enableWarningsAsErrors"]?.toString()?.toBoolean() ?: false
   }
diff --git a/packages/helloworld/android/build.gradle b/packages/helloworld/android/build.gradle
index 0dd0fccb82db..b51b5dffbbf0 100644
--- a/packages/helloworld/android/build.gradle
+++ b/packages/helloworld/android/build.gradle
@@ -12,7 +12,7 @@ buildscript {
         compileSdkVersion = 35
         targetSdkVersion = 34
         ndkVersion = "26.1.10909125"
-        kotlinVersion = "1.9.24"
+        kotlinVersion = "2.0.21"
     }
     repositories {
         google()
diff --git a/packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/SampleNativeComponentViewManager.kt b/packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/SampleNativeComponentViewManager.kt
index e76fedbb338c..3ab92ac3bd8c 100644
--- a/packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/SampleNativeComponentViewManager.kt
+++ b/packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/SampleNativeComponentViewManager.kt
@@ -76,6 +76,7 @@ internal class SampleNativeComponentViewManager :
     }
   }
 
+  @Deprecated("Deprecated in Java")
   @SuppressLint("BadMethodUse-android.view.View.setBackgroundColor")
   @Suppress("DEPRECATION") // We intentionally want to test against the legacy API here.
   override fun receiveCommand(view: SampleNativeView, commandId: Int, args: ReadableArray?) {
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.kt
index b4b1a46b8861..cf7600f1885e 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.kt
@@ -24,6 +24,7 @@ internal class EventAnimationDriver(
     private val eventPath: List<String>,
     @JvmField internal var valueNode: ValueAnimatedNode
 ) : RCTModernEventEmitter {
+  @Deprecated("Deprecated in Java")
   override fun receiveEvent(targetReactTag: Int, eventName: String, event: WritableMap?) =
       receiveEvent(-1, targetReactTag, eventName, event)
 
@@ -36,6 +37,7 @@ internal class EventAnimationDriver(
       // We assume this event can't be coalesced. `customCoalesceKey` has no meaning in Fabric.
       receiveEvent(surfaceId, targetTag, eventName, false, 0, event, EventCategoryDef.UNSPECIFIED)
 
+  @Deprecated("Deprecated in Java")
   override fun receiveTouches(
       eventName: String,
       touches: WritableArray,
@@ -44,6 +46,7 @@ internal class EventAnimationDriver(
     throw UnsupportedOperationException("receiveTouches is not support by native animated events")
   }
 
+  @Deprecated("Deprecated in Java")
   override fun receiveTouches(touchEvent: TouchEvent) {
     throw UnsupportedOperationException("receiveTouches is not support by native animated events")
   }
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.kt
index f19f7b52d439..6eaf92ac4b98 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.kt
@@ -18,6 +18,8 @@ import com.facebook.react.R
  * be triggered through the developers option menu displayed by [DevSupportManager].
  */
 public class DevSettingsActivity : PreferenceActivity() {
+
+  @Deprecated("Deprecated in Java")
   public override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
     title = application.resources.getString(R.string.catalyst_settings_title)
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/events/FabricEventEmitter.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/events/FabricEventEmitter.kt
index 2c85e1273d13..3420e0ed61b0 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/events/FabricEventEmitter.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/events/FabricEventEmitter.kt
@@ -17,6 +17,7 @@ import com.facebook.react.uimanager.events.TouchEvent
 import com.facebook.systrace.Systrace
 
 public class FabricEventEmitter(private val uiManager: FabricUIManager) : RCTModernEventEmitter {
+  @Deprecated("Deprecated in Java")
   public override fun receiveEvent(reactTag: Int, eventName: String, params: WritableMap?): Unit {
     receiveEvent(ViewUtil.NO_SURFACE_ID, reactTag, eventName, params)
   }
@@ -49,6 +50,7 @@ public class FabricEventEmitter(private val uiManager: FabricUIManager) : RCTMod
   }
 
   /** Touches are dispatched by [.receiveTouches] */
+  @Deprecated("Deprecated in Java")
   public override fun receiveTouches(
       eventName: String,
       touches: WritableArray,
@@ -57,6 +59,7 @@ public class FabricEventEmitter(private val uiManager: FabricUIManager) : RCTMod
     throw UnsupportedOperationException("EventEmitter#receiveTouches is not supported by Fabric")
   }
 
+  @Deprecated("Deprecated in Java")
   public override fun receiveTouches(event: TouchEvent): Unit {
     // Calls are expected to go via TouchesHelper
     throw UnsupportedOperationException("EventEmitter#receiveTouches is not supported by Fabric")
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/interop/InteropEventEmitter.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/interop/InteropEventEmitter.kt
index 5c4e7e42c301..eca7be1f6832 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/interop/InteropEventEmitter.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/interop/InteropEventEmitter.kt
@@ -39,6 +39,7 @@ public class InteropEventEmitter(private val reactContext: ReactContext) : RCTEv
     dispatcher?.dispatchEvent(InteropEvent(eventName, eventData, surfaceId, targetReactTag))
   }
 
+  @Deprecated("Deprecated in Java")
   override fun receiveTouches(
       eventName: String,
       touches: WritableArray,
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/BridgelessCatalystInstance.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/BridgelessCatalystInstance.kt
index 4bf0b77429aa..1a988f2afacc 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/BridgelessCatalystInstance.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/BridgelessCatalystInstance.kt
@@ -87,10 +87,12 @@ public class BridgelessCatalystInstance(private val reactHost: ReactHostImpl) :
   override fun <T : JavaScriptModule> getJSModule(jsInterface: Class<T>): T? =
       reactHost.currentReactContext?.getJSModule(jsInterface)
 
+  @get:Deprecated("Deprecated in Java")
   override public val javaScriptContextHolder: JavaScriptContextHolder
     get() = reactHost.getJavaScriptContextHolder()!!
 
   @Suppress("INAPPLICABLE_JVM_NAME")
+  @get:Deprecated("Deprecated in Java")
   @get:JvmName("getJSCallInvokerHolder") // This is needed to keep backward compatibility
   override public val jsCallInvokerHolder: CallInvokerHolder
     get() = reactHost.getJSCallInvokerHolder()!!
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/InsetBoxShadowDrawable.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/InsetBoxShadowDrawable.kt
index f29f148efdb2..a241468a7149 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/InsetBoxShadowDrawable.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/InsetBoxShadowDrawable.kt
@@ -85,6 +85,7 @@ internal class InsetBoxShadowDrawable(
     invalidateSelf()
   }
 
+  @Deprecated("Deprecated in Java")
   override fun getOpacity(): Int {
     val alpha = Color.alpha(shadowColor)
     return if (alpha == 0) PixelFormat.TRANSPARENT
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutlineDrawable.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutlineDrawable.kt
index cb7e2f10494b..fcc6079f7e3e 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutlineDrawable.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutlineDrawable.kt
@@ -105,6 +105,7 @@ internal class OutlineDrawable(
     invalidateSelf()
   }
 
+  @Deprecated("Deprecated in Java")
   override fun getOpacity(): Int =
       ((outlinePaint.alpha / 255f) / (Color.alpha(outlineColor) / 255f) * 255f).roundToInt()
 
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutsetBoxShadowDrawable.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutsetBoxShadowDrawable.kt
index 9df839902af8..3d4a433d908d 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutsetBoxShadowDrawable.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/drawable/OutsetBoxShadowDrawable.kt
@@ -73,6 +73,7 @@ internal class OutsetBoxShadowDrawable(
     invalidateSelf()
   }
 
+  @Deprecated("Deprecated in Java")
   override fun getOpacity(): Int {
     val alpha = Color.alpha(shadowColor)
     return if (alpha == 0) PixelFormat.TRANSPARENT
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BlackHoleEventDispatcher.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BlackHoleEventDispatcher.kt
index e25e980eb409..2c0229f1ccf8 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BlackHoleEventDispatcher.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BlackHoleEventDispatcher.kt
@@ -34,6 +34,7 @@ public class BlackHoleEventDispatcher private constructor() : EventDispatcher {
       listener: BatchEventDispatchedListener
   ): Unit = Unit
 
+  @Deprecated("Deprecated in Java")
   @Suppress("DEPRECATION")
   public override fun registerEventEmitter(
       uiManagerType: Int,
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.kt
index a62acf4be2b4..8feb8b3600f2 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.kt
@@ -110,6 +110,7 @@ public class TouchEvent private constructor() : Event<TouchEvent>() {
 
   override fun getCoalescingKey(): Short = coalescingKey
 
+  @Deprecated("Deprecated in Java")
   override fun dispatch(rctEventEmitter: RCTEventEmitter) {
     if (verifyMotionEvent()) {
       TouchesHelper.sendTouchesLegacy(rctEventEmitter, this)
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageDownloadListener.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageDownloadListener.kt
index caf3f3eebe2b..a6cf0551fe8c 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageDownloadListener.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageDownloadListener.kt
@@ -44,7 +44,7 @@ internal open class ReactImageDownloadListener<INFO> :
 
     override fun setColorFilter(colorFilter: ColorFilter?) = Unit
 
-    override fun getOpacity(): Int = PixelFormat.OPAQUE
+    @Deprecated("Deprecated in Java") override fun getOpacity(): Int = PixelFormat.OPAQUE
   }
 
   companion object {
diff --git a/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/bridge/interop/FakeRCTEventEmitter.kt b/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/bridge/interop/FakeRCTEventEmitter.kt
index 46f96d0b6bfc..f325893d0222 100644
--- a/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/bridge/interop/FakeRCTEventEmitter.kt
+++ b/packages/react-native/ReactAndroid/src/test/java/com/facebook/react/bridge/interop/FakeRCTEventEmitter.kt
@@ -17,8 +17,10 @@ import com.facebook.react.uimanager.events.RCTEventEmitter
 @UnstableReactNativeAPI
 class FakeRCTEventEmitter : RCTEventEmitter {
 
+  @Deprecated("Deprecated in Java")
   override fun receiveEvent(targetReactTag: Int, eventName: String, event: WritableMap?) = Unit
 
+  @Deprecated("Deprecated in Java")
   override fun receiveTouches(
       eventName: String,
       touches: WritableArray,
diff --git a/packages/react-native/ReactAndroid/src/test/java/com/facebook/testutils/fakes/FakeEventDispatcher.kt b/packages/react-native/ReactAndroid/src/test/java/com/facebook/testutils/fakes/FakeEventDispatcher.kt
index d386ac5858e6..e3c9fafab72e 100644
--- a/packages/react-native/ReactAndroid/src/test/java/com/facebook/testutils/fakes/FakeEventDispatcher.kt
+++ b/packages/react-native/ReactAndroid/src/test/java/com/facebook/testutils/fakes/FakeEventDispatcher.kt
@@ -38,6 +38,7 @@ class FakeEventDispatcher : EventDispatcher {
 
   override fun removeBatchEventDispatchedListener(listener: BatchEventDispatchedListener) = Unit
 
+  @Deprecated("Deprecated in Java")
   override fun registerEventEmitter(uiManagerType: Int, eventEmitter: RCTEventEmitter) = Unit
 
   override fun registerEventEmitter(uiManagerType: Int, eventEmitter: RCTModernEventEmitter) = Unit
diff --git a/packages/react-native/gradle/libs.versions.toml b/packages/react-native/gradle/libs.versions.toml
index c43ee422c333..20745f011852 100644
--- a/packages/react-native/gradle/libs.versions.toml
+++ b/packages/react-native/gradle/libs.versions.toml
@@ -23,7 +23,7 @@ javax-annotation-api = "1.3.2"
 javax-inject = "1"
 jsr305 = "3.0.2"
 junit = "4.13.2"
-kotlin = "1.9.24"
+kotlin = "2.0.21"
 mockito = "3.12.4"
 nexus-publish = "1.3.0"
 okhttp = "4.9.2"
diff --git a/packages/rn-tester/android/app/build.gradle.kts b/packages/rn-tester/android/app/build.gradle.kts
index 68e961266ad5..703d6387ed66 100644
--- a/packages/rn-tester/android/app/build.gradle.kts
+++ b/packages/rn-tester/android/app/build.gradle.kts
@@ -194,7 +194,7 @@ tasks.withType<JavaCompile>().configureEach {
 }
 
 tasks.withType<KotlinCompile>().configureEach {
-  kotlinOptions {
+  compilerOptions {
     allWarningsAsErrors =
         project.properties["enableWarningsAsErrors"]?.toString()?.toBoolean() ?: false
   }
diff --git a/packages/rn-tester/android/app/src/main/java/com/facebook/react/uiapp/component/MyLegacyViewManager.kt b/packages/rn-tester/android/app/src/main/java/com/facebook/react/uiapp/component/MyLegacyViewManager.kt
index 422fbcb00db3..990227b4f58f 100644
--- a/packages/rn-tester/android/app/src/main/java/com/facebook/react/uiapp/component/MyLegacyViewManager.kt
+++ b/packages/rn-tester/android/app/src/main/java/com/facebook/react/uiapp/component/MyLegacyViewManager.kt
@@ -65,6 +65,7 @@ internal class MyLegacyViewManager(reactContext: ReactApplicationContext) :
     }
   }
 
+  @Deprecated("Deprecated in Java")
   @Suppress("DEPRECATION") // We intentionally want to test against the legacy API here.
   override fun receiveCommand(view: MyNativeView, commandId: Int, args: ReadableArray?) {
     when (commandId) {