diff --git a/packages/react-native-codegen/e2e/__tests__/components/__snapshots__/GeneratePropsH-test.js.snap b/packages/react-native-codegen/e2e/__tests__/components/__snapshots__/GeneratePropsH-test.js.snap
index aaf1c130eafba2..50a2d4dbae2877 100644
--- a/packages/react-native-codegen/e2e/__tests__/components/__snapshots__/GeneratePropsH-test.js.snap
+++ b/packages/react-native-codegen/e2e/__tests__/components/__snapshots__/GeneratePropsH-test.js.snap
@@ -82,7 +82,7 @@ static inline std::string toString(const ArrayPropsNativeComponentViewSizesMask
     return result;
 }
 struct ArrayPropsNativeComponentViewObjectStruct {
-  std::string prop;
+  std::string prop{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ArrayPropsNativeComponentViewObjectStruct &result) {
@@ -109,8 +109,8 @@ static inline void fromRawValue(const PropsParserContext& context, const RawValu
 
 
 struct ArrayPropsNativeComponentViewArrayOfObjectsStruct {
-  Float prop1;
-  int prop2;
+  Float prop1{0.0};
+  int prop2{0};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ArrayPropsNativeComponentViewArrayOfObjectsStruct &result) {
@@ -756,12 +756,12 @@ static inline std::string toString(const ObjectPropsNativeComponentIntEnumProp &
   }
 }
 struct ObjectPropsNativeComponentObjectPropStruct {
-  std::string stringProp;
-  bool booleanProp;
-  Float floatProp;
-  int intProp;
-  ObjectPropsNativeComponentStringEnumProp stringEnumProp;
-  ObjectPropsNativeComponentIntEnumProp intEnumProp;
+  std::string stringProp{\\"\\"};
+  bool booleanProp{false};
+  Float floatProp{0.0};
+  int intProp{0};
+  ObjectPropsNativeComponentStringEnumProp stringEnumProp{ObjectPropsNativeComponentStringEnumProp::Small};
+  ObjectPropsNativeComponentIntEnumProp intEnumProp{ObjectPropsNativeComponentIntEnumProp::IntEnumProp0};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsNativeComponentObjectPropStruct &result) {
@@ -798,7 +798,7 @@ static inline std::string toString(const ObjectPropsNativeComponentObjectPropStr
 }
 
 struct ObjectPropsNativeComponentObjectArrayPropStruct {
-  std::vector<std::string> array;
+  std::vector<std::string> array{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsNativeComponentObjectArrayPropStruct &result) {
@@ -815,9 +815,9 @@ static inline std::string toString(const ObjectPropsNativeComponentObjectArrayPr
 }
 
 struct ObjectPropsNativeComponentObjectPrimitiveRequiredPropStruct {
-  ImageSource image;
-  SharedColor color;
-  Point point;
+  ImageSource image{};
+  SharedColor color{};
+  Point point{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsNativeComponentObjectPrimitiveRequiredPropStruct &result) {
diff --git a/packages/react-native-codegen/src/generators/components/CppHelpers.js b/packages/react-native-codegen/src/generators/components/CppHelpers.js
index 9f8fd10387507f..d1bf2f61599aa4 100644
--- a/packages/react-native-codegen/src/generators/components/CppHelpers.js
+++ b/packages/react-native-codegen/src/generators/components/CppHelpers.js
@@ -166,6 +166,14 @@ function getEnumMaskName(enumName: string): string {
   return `${enumName}Mask`;
 }
 
+function getDefaultInitializerString(
+  componentName: string,
+  prop: NamedShape<PropTypeAnnotation>,
+): string {
+  const defaultValue = convertDefaultTypeToString(componentName, prop);
+  return `{${defaultValue}}`;
+}
+
 function convertDefaultTypeToString(
   componentName: string,
   prop: NamedShape<PropTypeAnnotation>,
@@ -270,6 +278,7 @@ const IncludeTemplate = ({
 };
 
 module.exports = {
+  getDefaultInitializerString,
   convertDefaultTypeToString,
   getCppArrayTypeForAnnotation,
   getCppTypeForAnnotation,
diff --git a/packages/react-native-codegen/src/generators/components/GeneratePropsH.js b/packages/react-native-codegen/src/generators/components/GeneratePropsH.js
index da7da65f3a992e..e8af5043554695 100644
--- a/packages/react-native-codegen/src/generators/components/GeneratePropsH.js
+++ b/packages/react-native-codegen/src/generators/components/GeneratePropsH.js
@@ -23,8 +23,8 @@ const {
   getNativeTypeFromAnnotation,
 } = require('./ComponentsGeneratorUtils.js');
 const {
-  convertDefaultTypeToString,
   generateStructName,
+  getDefaultInitializerString,
   getEnumMaskName,
   toIntEnumValueName,
 } = require('./CppHelpers.js');
@@ -456,13 +456,21 @@ function generateEnumString(
 function generatePropsString(
   componentName: string,
   props: $ReadOnlyArray<NamedShape<PropTypeAnnotation>>,
+  nameParts: $ReadOnlyArray<string>,
 ) {
   return props
     .map(prop => {
-      const nativeType = getNativeTypeFromAnnotation(componentName, prop, []);
-      const defaultValue = convertDefaultTypeToString(componentName, prop);
+      const nativeType = getNativeTypeFromAnnotation(
+        componentName,
+        prop,
+        nameParts,
+      );
+      const defaultInitializer = getDefaultInitializerString(
+        componentName,
+        prop,
+      );
 
-      return `${nativeType} ${prop.name}{${defaultValue}};`;
+      return `${nativeType} ${prop.name}${defaultInitializer};`;
     })
     .join('\n' + '  ');
 }
@@ -629,16 +637,11 @@ function generateStruct(
 ): void {
   const structNameParts = nameParts;
   const structName = generateStructName(componentName, structNameParts);
-
-  const fields = properties
-    .map(property => {
-      return `${getNativeTypeFromAnnotation(
-        componentName,
-        property,
-        structNameParts,
-      )} ${property.name};`;
-    })
-    .join('\n' + '  ');
+  const fields = generatePropsString(
+    componentName,
+    properties,
+    structNameParts,
+  );
 
   properties.forEach((property: NamedShape<PropTypeAnnotation>) => {
     const name = property.name;
@@ -738,6 +741,7 @@ module.exports = {
             const propsString = generatePropsString(
               componentName,
               component.props,
+              [],
             );
             const extendString = getClassExtendString(component);
             const extendsImports = getExtendsImports(component.extendsProps);
diff --git a/packages/react-native-codegen/src/generators/components/__test_fixtures__/fixtures.js b/packages/react-native-codegen/src/generators/components/__test_fixtures__/fixtures.js
index 3b6915f33f9ec2..9121c8ad6878ee 100644
--- a/packages/react-native-codegen/src/generators/components/__test_fixtures__/fixtures.js
+++ b/packages/react-native-codegen/src/generators/components/__test_fixtures__/fixtures.js
@@ -871,6 +871,38 @@ const OBJECT_PROPS: SchemaType = {
                       default: 0,
                     },
                   },
+                  {
+                    name: 'stringUserDefaultProp',
+                    optional: true,
+                    typeAnnotation: {
+                      type: 'StringTypeAnnotation',
+                      default: 'user_default',
+                    },
+                  },
+                  {
+                    name: 'booleanUserDefaultProp',
+                    optional: true,
+                    typeAnnotation: {
+                      type: 'BooleanTypeAnnotation',
+                      default: true,
+                    },
+                  },
+                  {
+                    name: 'floatUserDefaultProp',
+                    optional: true,
+                    typeAnnotation: {
+                      type: 'FloatTypeAnnotation',
+                      default: 3.14,
+                    },
+                  },
+                  {
+                    name: 'intUserDefaultProp',
+                    optional: true,
+                    typeAnnotation: {
+                      type: 'Int32TypeAnnotation',
+                      default: 9999,
+                    },
+                  },
                   {
                     name: 'stringEnumProp',
                     optional: true,
diff --git a/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsH-test.js.snap b/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsH-test.js.snap
index de244b9f33b380..fea966233c4ef2 100644
--- a/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsH-test.js.snap
+++ b/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsH-test.js.snap
@@ -81,7 +81,7 @@ static inline std::string toString(const ArrayPropsNativeComponentSizesMask &val
     return result;
 }
 struct ArrayPropsNativeComponentObjectStruct {
-  std::string stringProp;
+  std::string stringProp{\\"\\"};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ArrayPropsNativeComponentObjectStruct &result) {
@@ -108,7 +108,7 @@ static inline void fromRawValue(const PropsParserContext& context, const RawValu
 
 
 struct ArrayPropsNativeComponentArrayObjectStruct {
-  std::string stringProp;
+  std::string stringProp{\\"\\"};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ArrayPropsNativeComponentArrayObjectStruct &result) {
@@ -135,7 +135,7 @@ static inline void fromRawValue(const PropsParserContext& context, const RawValu
 
 
 struct ArrayPropsNativeComponentArrayStruct {
-  std::vector<ArrayPropsNativeComponentArrayObjectStruct> object;
+  std::vector<ArrayPropsNativeComponentArrayObjectStruct> object{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ArrayPropsNativeComponentArrayStruct &result) {
@@ -162,7 +162,7 @@ static inline void fromRawValue(const PropsParserContext& context, const RawValu
 
 
 struct ArrayPropsNativeComponentArrayOfArrayOfObjectStruct {
-  std::string stringProp;
+  std::string stringProp{\\"\\"};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ArrayPropsNativeComponentArrayOfArrayOfObjectStruct &result) {
@@ -242,9 +242,9 @@ Map {
 namespace facebook::react {
 
 struct ArrayPropsNativeComponentNativePrimitivesStruct {
-  std::vector<SharedColor> colors;
-  std::vector<ImageSource> srcs;
-  std::vector<Point> points;
+  std::vector<SharedColor> colors{};
+  std::vector<ImageSource> srcs{};
+  std::vector<Point> points{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ArrayPropsNativeComponentNativePrimitivesStruct &result) {
@@ -1100,7 +1100,7 @@ static inline std::string toString(const ObjectPropsIntEnumProp &value) {
   }
 }
 struct ObjectPropsObjectPropObjectArrayPropStruct {
-  std::vector<std::string> array;
+  std::vector<std::string> array{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsObjectPropObjectArrayPropStruct &result) {
@@ -1117,9 +1117,9 @@ static inline std::string toString(const ObjectPropsObjectPropObjectArrayPropStr
 }
 
 struct ObjectPropsObjectPropObjectPrimitiveRequiredPropStruct {
-  ImageSource image;
-  SharedColor color;
-  Point point;
+  ImageSource image{};
+  SharedColor color{};
+  Point point{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsObjectPropObjectPrimitiveRequiredPropStruct &result) {
@@ -1144,7 +1144,7 @@ static inline std::string toString(const ObjectPropsObjectPropObjectPrimitiveReq
 }
 
 struct ObjectPropsObjectPropNestedPropANestedPropBStruct {
-  std::string nestedPropC;
+  std::string nestedPropC{\\"\\"};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsObjectPropNestedPropANestedPropBStruct &result) {
@@ -1161,7 +1161,7 @@ static inline std::string toString(const ObjectPropsObjectPropNestedPropANestedP
 }
 
 struct ObjectPropsObjectPropNestedPropAStruct {
-  ObjectPropsObjectPropNestedPropANestedPropBStruct nestedPropB;
+  ObjectPropsObjectPropNestedPropANestedPropBStruct nestedPropB{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsObjectPropNestedPropAStruct &result) {
@@ -1178,7 +1178,7 @@ static inline std::string toString(const ObjectPropsObjectPropNestedPropAStruct
 }
 
 struct ObjectPropsObjectPropNestedArrayAsPropertyArrayPropStruct {
-  std::string stringProp;
+  std::string stringProp{\\"\\"};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsObjectPropNestedArrayAsPropertyArrayPropStruct &result) {
@@ -1205,7 +1205,7 @@ static inline void fromRawValue(const PropsParserContext& context, const RawValu
 
 
 struct ObjectPropsObjectPropNestedArrayAsPropertyStruct {
-  std::vector<ObjectPropsObjectPropNestedArrayAsPropertyArrayPropStruct> arrayProp;
+  std::vector<ObjectPropsObjectPropNestedArrayAsPropertyArrayPropStruct> arrayProp{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsObjectPropNestedArrayAsPropertyStruct &result) {
@@ -1222,16 +1222,20 @@ static inline std::string toString(const ObjectPropsObjectPropNestedArrayAsPrope
 }
 
 struct ObjectPropsObjectPropStruct {
-  std::string stringProp;
-  bool booleanProp;
-  Float floatProp;
-  int intProp;
-  ObjectPropsStringEnumProp stringEnumProp;
-  ObjectPropsIntEnumProp intEnumProp;
-  ObjectPropsObjectPropObjectArrayPropStruct objectArrayProp;
-  ObjectPropsObjectPropObjectPrimitiveRequiredPropStruct objectPrimitiveRequiredProp;
-  ObjectPropsObjectPropNestedPropAStruct nestedPropA;
-  ObjectPropsObjectPropNestedArrayAsPropertyStruct nestedArrayAsProperty;
+  std::string stringProp{\\"\\"};
+  bool booleanProp{false};
+  Float floatProp{0.0};
+  int intProp{0};
+  std::string stringUserDefaultProp{\\"user_default\\"};
+  bool booleanUserDefaultProp{true};
+  Float floatUserDefaultProp{3.14};
+  int intUserDefaultProp{9999};
+  ObjectPropsStringEnumProp stringEnumProp{ObjectPropsStringEnumProp::Option1};
+  ObjectPropsIntEnumProp intEnumProp{ObjectPropsIntEnumProp::IntEnumProp0};
+  ObjectPropsObjectPropObjectArrayPropStruct objectArrayProp{};
+  ObjectPropsObjectPropObjectPrimitiveRequiredPropStruct objectPrimitiveRequiredProp{};
+  ObjectPropsObjectPropNestedPropAStruct nestedPropA{};
+  ObjectPropsObjectPropNestedArrayAsPropertyStruct nestedArrayAsProperty{};
 };
 
 static inline void fromRawValue(const PropsParserContext& context, const RawValue &value, ObjectPropsObjectPropStruct &result) {
@@ -1253,6 +1257,22 @@ static inline void fromRawValue(const PropsParserContext& context, const RawValu
   if (tmp_intProp != map.end()) {
     fromRawValue(context, tmp_intProp->second, result.intProp);
   }
+  auto tmp_stringUserDefaultProp = map.find(\\"stringUserDefaultProp\\");
+  if (tmp_stringUserDefaultProp != map.end()) {
+    fromRawValue(context, tmp_stringUserDefaultProp->second, result.stringUserDefaultProp);
+  }
+  auto tmp_booleanUserDefaultProp = map.find(\\"booleanUserDefaultProp\\");
+  if (tmp_booleanUserDefaultProp != map.end()) {
+    fromRawValue(context, tmp_booleanUserDefaultProp->second, result.booleanUserDefaultProp);
+  }
+  auto tmp_floatUserDefaultProp = map.find(\\"floatUserDefaultProp\\");
+  if (tmp_floatUserDefaultProp != map.end()) {
+    fromRawValue(context, tmp_floatUserDefaultProp->second, result.floatUserDefaultProp);
+  }
+  auto tmp_intUserDefaultProp = map.find(\\"intUserDefaultProp\\");
+  if (tmp_intUserDefaultProp != map.end()) {
+    fromRawValue(context, tmp_intUserDefaultProp->second, result.intUserDefaultProp);
+  }
   auto tmp_stringEnumProp = map.find(\\"stringEnumProp\\");
   if (tmp_stringEnumProp != map.end()) {
     fromRawValue(context, tmp_stringEnumProp->second, result.stringEnumProp);
diff --git a/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsJavaPojo-test.js.snap b/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsJavaPojo-test.js.snap
index 47ce16d68f18f5..fe1eaec379e592 100644
--- a/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsJavaPojo-test.js.snap
+++ b/packages/react-native-codegen/src/generators/components/__tests__/__snapshots__/GeneratePropsJavaPojo-test.js.snap
@@ -1024,6 +1024,10 @@ public class ObjectPropsPropsObjectProp {
   private boolean mBooleanProp;
   private float mFloatProp;
   private int mIntProp;
+  private @Nullable String mStringUserDefaultProp;
+  private boolean mBooleanUserDefaultProp;
+  private float mFloatUserDefaultProp;
+  private int mIntUserDefaultProp;
   private @Nullable String mStringEnumProp;
   private @Nullable Integer mIntEnumProp;
   private ObjectPropsPropsObjectPropObjectArrayProp mObjectArrayProp;
@@ -1047,6 +1051,22 @@ public class ObjectPropsPropsObjectProp {
     return mIntProp;
   }
   @DoNotStrip
+  public @Nullable String getStringUserDefaultProp() {
+    return mStringUserDefaultProp;
+  }
+  @DoNotStrip
+  public boolean getBooleanUserDefaultProp() {
+    return mBooleanUserDefaultProp;
+  }
+  @DoNotStrip
+  public float getFloatUserDefaultProp() {
+    return mFloatUserDefaultProp;
+  }
+  @DoNotStrip
+  public int getIntUserDefaultProp() {
+    return mIntUserDefaultProp;
+  }
+  @DoNotStrip
   public @Nullable String getStringEnumProp() {
     return mStringEnumProp;
   }