diff --git a/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp b/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
index 063d9fa609..fffd3e9df7 100644
--- a/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
@@ -67,7 +67,8 @@ void WindowObject::initialize_global_object()
     define_property("window", this, JS::Attribute::Enumerable);
     define_property("frames", this, JS::Attribute::Enumerable);
     define_property("self", this, JS::Attribute::Enumerable);
-    define_native_property("top", top_getter, JS::Attribute::Enumerable);
+    define_native_property("top", top_getter, nullptr, JS::Attribute::Enumerable);
+    define_native_property("parent", parent_getter, nullptr, JS::Attribute::Enumerable);
     define_native_property("document", document_getter, nullptr, JS::Attribute::Enumerable);
     define_native_property("performance", performance_getter, nullptr, JS::Attribute::Enumerable);
     define_native_property("screen", screen_getter, nullptr, JS::Attribute::Enumerable);
@@ -366,6 +367,22 @@ JS_DEFINE_NATIVE_GETTER(WindowObject::top_getter)
     return top_window.wrapper();
 }
 
+JS_DEFINE_NATIVE_GETTER(WindowObject::parent_getter)
+{
+    auto* impl = impl_from(vm, global_object);
+    if (!impl)
+        return {};
+    auto* this_frame = impl->document().frame();
+    VERIFY(this_frame);
+    if (this_frame->parent()) {
+        VERIFY(this_frame->parent()->document());
+        auto& parent_window = this_frame->parent()->document()->window();
+        return parent_window.wrapper();
+    }
+    VERIFY(this_frame == &this_frame->main_frame());
+    return impl->wrapper();
+}
+
 JS_DEFINE_NATIVE_GETTER(WindowObject::document_getter)
 {
     auto* impl = impl_from(vm, global_object);
diff --git a/Userland/Libraries/LibWeb/Bindings/WindowObject.h b/Userland/Libraries/LibWeb/Bindings/WindowObject.h
index 0332ca11b2..3d73cdf590 100644
--- a/Userland/Libraries/LibWeb/Bindings/WindowObject.h
+++ b/Userland/Libraries/LibWeb/Bindings/WindowObject.h
@@ -90,6 +90,8 @@ private:
     JS_DECLARE_NATIVE_GETTER(inner_width_getter);
     JS_DECLARE_NATIVE_GETTER(inner_height_getter);
 
+    JS_DECLARE_NATIVE_GETTER(parent_getter);
+
     JS_DECLARE_NATIVE_FUNCTION(alert);
     JS_DECLARE_NATIVE_FUNCTION(confirm);
     JS_DECLARE_NATIVE_FUNCTION(prompt);