diff --git a/packages/react-native/Libraries/Lists/FlatList.js b/packages/react-native/Libraries/Lists/FlatList.js
index ddb929e6a80..63e2de28382 100644
--- a/packages/react-native/Libraries/Lists/FlatList.js
+++ b/packages/react-native/Libraries/Lists/FlatList.js
@@ -36,7 +36,7 @@ type RequiredProps<ItemT> = {|
    * An array (or array-like list) of items to render. Other data types can be
    * used by targeting VirtualizedList directly.
    */
-  data: ?$ArrayLike<ItemT>,
+  data: ?$ReadOnly<$ArrayLike<ItemT>>,
 |};
 type OptionalProps<ItemT> = {|
   /**
@@ -91,7 +91,7 @@ type OptionalProps<ItemT> = {|
    * specify `ItemSeparatorComponent`.
    */
   getItemLayout?: (
-    data: ?$ArrayLike<ItemT>,
+    data: ?$ReadOnly<$ArrayLike<ItemT>>,
     index: number,
   ) => {
     length: number,
diff --git a/packages/react-native/Libraries/Lists/FlatList.js.flow b/packages/react-native/Libraries/Lists/FlatList.js.flow
index 304a1006182..7228c75461c 100644
--- a/packages/react-native/Libraries/Lists/FlatList.js.flow
+++ b/packages/react-native/Libraries/Lists/FlatList.js.flow
@@ -27,14 +27,14 @@ type RequiredProps<ItemT> = {|
    * For simplicity, data is just a plain array. If you want to use something else, like an
    * immutable list, use the underlying `VirtualizedList` directly.
    */
-  data: ?$ReadOnlyArray<ItemT>,
+  data: ?$ReadOnly<$ArrayLike<ItemT>>,
 |};
 type OptionalProps<ItemT> = {|
   renderItem?: ?RenderItemType<ItemT>,
   columnWrapperStyle?: ViewStyleProp,
   extraData?: any,
   getItemLayout?: (
-    data: ?Array<ItemT>,
+    data: ?$ReadOnly<$ArrayLike<ItemT>>,
     index: number,
   ) => {
     length: number,
diff --git a/packages/rn-tester/js/examples/TurboModule/NativeCxxModuleExampleExample.js b/packages/rn-tester/js/examples/TurboModule/NativeCxxModuleExampleExample.js
index 9e18022e84c..3aeb55e8040 100644
--- a/packages/rn-tester/js/examples/TurboModule/NativeCxxModuleExampleExample.js
+++ b/packages/rn-tester/js/examples/TurboModule/NativeCxxModuleExampleExample.js
@@ -231,7 +231,7 @@ class NativeCxxModuleExampleExample extends React.Component<{||}, State> {
           </TouchableOpacity>
         </View>
         <FlatList
-          // $FlowFixMe[incompatible-type]
+          // $FlowFixMe[incompatible-type-arg]
           data={Object.keys(this._tests)}
           keyExtractor={item => item}
           renderItem={({item}: {item: Examples, ...}) => (