diff --git a/packages/react-native/ReactAndroid/api/ReactAndroid.api b/packages/react-native/ReactAndroid/api/ReactAndroid.api
index 65b7d4c16e2c..0e1d8520838a 100644
--- a/packages/react-native/ReactAndroid/api/ReactAndroid.api
+++ b/packages/react-native/ReactAndroid/api/ReactAndroid.api
@@ -4369,6 +4369,7 @@ public final class com/facebook/react/uimanager/LengthPercentage {
 	public static final field Companion Lcom/facebook/react/uimanager/LengthPercentage$Companion;
 	public fun <init> ()V
 	public fun <init> (FLcom/facebook/react/uimanager/LengthPercentageType;)V
+	public final fun getUnit ()Lcom/facebook/react/uimanager/LengthPercentageType;
 	public final fun resolve (FF)F
 	public static final fun setFromDynamic (Lcom/facebook/react/bridge/Dynamic;)Lcom/facebook/react/uimanager/LengthPercentage;
 }
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/LengthPercentage.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/LengthPercentage.kt
index 6f5d5187f330..c4b18fc50a1e 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/LengthPercentage.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/LengthPercentage.kt
@@ -20,7 +20,7 @@ public enum class LengthPercentageType {
 
 public class LengthPercentage(
     private val value: Float,
-    private val unit: LengthPercentageType,
+    public val unit: LengthPercentageType,
 ) {
   public companion object {
     @JvmStatic
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
index b910dd8266de..29f22aa352ee 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
@@ -26,6 +26,7 @@
 import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.uimanager.BackgroundStyleApplicator;
 import com.facebook.react.uimanager.LengthPercentage;
+import com.facebook.react.uimanager.LengthPercentageType;
 import com.facebook.react.uimanager.PixelUtil;
 import com.facebook.react.uimanager.PointerEvents;
 import com.facebook.react.uimanager.Spacing;
@@ -156,6 +157,15 @@ public void nextFocusUp(ReactViewGroup view, int viewId) {
       })
   public void setBorderRadius(ReactViewGroup view, int index, Dynamic rawBorderRadius) {
     @Nullable LengthPercentage borderRadius = LengthPercentage.setFromDynamic(rawBorderRadius);
+
+    // We do not support percentage border radii on Paper in order to be consistent with iOS (to
+    // avoid developer surprise if it works on one platform but not another).
+    if (ViewUtil.getUIManagerType(view) != UIManagerType.FABRIC
+        && borderRadius != null
+        && borderRadius.getUnit() == LengthPercentageType.PERCENT) {
+      borderRadius = null;
+    }
+
     if (ReactNativeFeatureFlags.enableBackgroundStyleApplicator()) {
       BackgroundStyleApplicator.setBorderRadius(
           view, BorderRadiusProp.values()[index], borderRadius);