diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 738abe203a..f8fafab1fc 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -395,6 +395,7 @@ set(SOURCES
     HTML/TextMetrics.cpp
     HTML/Timer.cpp
     HTML/TimeRanges.cpp
+    HTML/ToggleEvent.cpp
     HTML/TrackEvent.cpp
     HTML/TraversableNavigable.cpp
     HTML/VideoTrack.cpp
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index dd75acf5a9..44dea0fde0 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -425,7 +425,6 @@ class NavigationDestination;
 class NavigationHistoryEntry;
 class NavigationTransition;
 class Navigator;
-struct NavigationParams;
 class Origin;
 class PageTransitionEvent;
 class Path2D;
@@ -438,6 +437,7 @@ class SubmitEvent;
 class TextMetrics;
 class Timer;
 class TimeRanges;
+class ToggleEvent;
 class TrackEvent;
 class TraversableNavigable;
 class VideoTrack;
@@ -453,15 +453,16 @@ class WorkerLocation;
 class WorkerNavigator;
 
 enum class MediaSeekMode;
+enum class SandboxingFlagSet;
 
 struct CrossOriginOpenerPolicy;
 struct CrossOriginOpenerPolicyEnforcementResult;
 struct Environment;
 struct EnvironmentSettingsObject;
 struct NavigationParams;
-struct POSTResource;
+struct NavigationParams;
 struct PolicyContainer;
-enum class SandboxingFlagSet;
+struct POSTResource;
 struct SerializedFormData;
 struct SessionHistoryEntry;
 }
diff --git a/Userland/Libraries/LibWeb/HTML/ToggleEvent.cpp b/Userland/Libraries/LibWeb/HTML/ToggleEvent.cpp
new file mode 100644
index 0000000000..79662d8924
--- /dev/null
+++ b/Userland/Libraries/LibWeb/HTML/ToggleEvent.cpp
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/ToggleEventPrototype.h>
+#include <LibWeb/HTML/ToggleEvent.h>
+
+namespace Web::HTML {
+
+JS::NonnullGCPtr<ToggleEvent> ToggleEvent::create(JS::Realm& realm, FlyString const& event_name, ToggleEventInit event_init)
+{
+    return realm.heap().allocate<ToggleEvent>(realm, realm, event_name, move(event_init));
+}
+
+WebIDL::ExceptionOr<JS::NonnullGCPtr<ToggleEvent>> ToggleEvent::construct_impl(JS::Realm& realm, FlyString const& event_name, ToggleEventInit event_init)
+{
+    return create(realm, event_name, move(event_init));
+}
+
+ToggleEvent::ToggleEvent(JS::Realm& realm, FlyString const& event_name, ToggleEventInit event_init)
+    : DOM::Event(realm, event_name, event_init)
+    , m_old_state(move(event_init.old_state))
+    , m_new_state(move(event_init.new_state))
+{
+}
+
+void ToggleEvent::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::ToggleEventPrototype>(realm, "ToggleEvent"));
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/HTML/ToggleEvent.h b/Userland/Libraries/LibWeb/HTML/ToggleEvent.h
new file mode 100644
index 0000000000..45061991f6
--- /dev/null
+++ b/Userland/Libraries/LibWeb/HTML/ToggleEvent.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/FlyString.h>
+#include <AK/String.h>
+#include <LibWeb/DOM/Event.h>
+
+namespace Web::HTML {
+
+struct ToggleEventInit : public DOM::EventInit {
+    String old_state;
+    String new_state;
+};
+
+class ToggleEvent : public DOM::Event {
+    WEB_PLATFORM_OBJECT(ToggleEvent, DOM::Event);
+
+public:
+    [[nodiscard]] static JS::NonnullGCPtr<ToggleEvent> create(JS::Realm&, FlyString const& event_name, ToggleEventInit = {});
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<ToggleEvent>> construct_impl(JS::Realm&, FlyString const& event_name, ToggleEventInit);
+
+    // https://html.spec.whatwg.org/multipage/interaction.html#dom-toggleevent-oldstate
+    String const& old_state() const { return m_old_state; }
+
+    // https://html.spec.whatwg.org/multipage/interaction.html#dom-toggleevent-newstate
+    String const& new_state() const { return m_new_state; }
+
+private:
+    ToggleEvent(JS::Realm&, FlyString const& event_name, ToggleEventInit event_init);
+
+    virtual void initialize(JS::Realm&) override;
+
+    String m_old_state;
+    String m_new_state;
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/HTML/ToggleEvent.idl b/Userland/Libraries/LibWeb/HTML/ToggleEvent.idl
new file mode 100644
index 0000000000..3c1fa86b98
--- /dev/null
+++ b/Userland/Libraries/LibWeb/HTML/ToggleEvent.idl
@@ -0,0 +1,14 @@
+#import <DOM/Event.idl>
+
+// https://html.spec.whatwg.org/multipage/interaction.html#toggleevent
+[Exposed=Window]
+interface ToggleEvent : Event {
+    constructor(DOMString type, optional ToggleEventInit eventInitDict = {});
+    readonly attribute DOMString oldState;
+    readonly attribute DOMString newState;
+};
+
+dictionary ToggleEventInit : EventInit {
+    DOMString oldState = "";
+    DOMString newState = "";
+};
diff --git a/Userland/Libraries/LibWeb/idl_files.cmake b/Userland/Libraries/LibWeb/idl_files.cmake
index 839f9db8eb..0bb760b397 100644
--- a/Userland/Libraries/LibWeb/idl_files.cmake
+++ b/Userland/Libraries/LibWeb/idl_files.cmake
@@ -184,6 +184,7 @@ libweb_js_bindings(HTML/Storage)
 libweb_js_bindings(HTML/SubmitEvent)
 libweb_js_bindings(HTML/TextMetrics)
 libweb_js_bindings(HTML/TimeRanges)
+libweb_js_bindings(HTML/ToggleEvent)
 libweb_js_bindings(HTML/TrackEvent)
 libweb_js_bindings(HTML/VideoTrack)
 libweb_js_bindings(HTML/VideoTrackList)