diff --git a/autotests/netwininfotestclient.cpp b/autotests/netwininfotestclient.cpp
--- a/autotests/netwininfotestclient.cpp
+++ b/autotests/netwininfotestclient.cpp
@@ -52,6 +52,8 @@
     void testUserTime();
     void testStartupId();
     void testDesktopFileName();
+    void testAppMenuObjectPath();
+    void testAppMenuServiceName();
     void testHandledIcons_data();
     void testHandledIcons();
     void testPid();
@@ -276,6 +278,36 @@
     QCOMPARE(info.startupId(), "foo");
 }
 
+void NetWinInfoTestClient::testAppMenuObjectPath()
+{
+    ATOM(_KDE_NET_WM_APPMENU_OBJECT_PATH)
+    INFO
+
+    QVERIFY(!info.appMenuObjectPath());
+
+    xcb_change_property(connection(), XCB_PROP_MODE_REPLACE, m_testWindow,
+                        atom, XCB_ATOM_STRING, 8, 3, "foo");
+    xcb_flush(connection());
+
+    waitForPropertyChange(&info, atom, NET::Property(0), NET::WM2AppMenuObjectPath);
+    QCOMPARE(info.appMenuObjectPath(), "foo");
+}
+
+void NetWinInfoTestClient::testAppMenuServiceName()
+{
+    ATOM(_KDE_NET_WM_APPMENU_SERVICE_NAME)
+    INFO
+
+    QVERIFY(!info.appMenuServiceName());
+
+    xcb_change_property(connection(), XCB_PROP_MODE_REPLACE, m_testWindow,
+                        atom, XCB_ATOM_STRING, 8, 3, "foo");
+    xcb_flush(connection());
+
+    waitForPropertyChange(&info, atom, NET::Property(0), NET::WM2AppMenuServiceName);
+    QCOMPARE(info.appMenuServiceName(), "foo");
+}
+
 void NetWinInfoTestClient::testDesktopFileName()
 {
     QVERIFY(connection());
diff --git a/src/kwindowinfo.h b/src/kwindowinfo.h
--- a/src/kwindowinfo.h
+++ b/src/kwindowinfo.h
@@ -573,6 +573,24 @@
      */
     int pid() const;
 
+    /**
+     * Returns service name of a window's application menu if present.
+     *
+     * Requires NET::WMPid passed as properties parameter to the constructor.
+     *
+     * @since 5.69
+     */
+    QByteArray applicationMenuServiceName() const;
+
+    /**
+     * Returns object path of a window's application menu if present.
+     *
+     * Requires NET::WMPid passed as properties parameter to the constructor.
+     *
+     * @since 5.69
+     */
+    QByteArray applicationMenuObjectPath() const;
+
     /**
      * Copy constructor.
      */
diff --git a/src/kwindowinfo.cpp b/src/kwindowinfo.cpp
--- a/src/kwindowinfo.cpp
+++ b/src/kwindowinfo.cpp
@@ -28,6 +28,9 @@
 KWindowInfoPrivatePidExtension::KWindowInfoPrivatePidExtension() = default;
 KWindowInfoPrivatePidExtension::~KWindowInfoPrivatePidExtension() = default;
 
+KWindowInfoPrivateAppMenuExtension::KWindowInfoPrivateAppMenuExtension() = default;
+KWindowInfoPrivateAppMenuExtension::~KWindowInfoPrivateAppMenuExtension() = default;
+
 class Q_DECL_HIDDEN KWindowInfoPrivate::Private
 {
 public:
@@ -37,14 +40,16 @@
     NET::Properties2 properties2;
     KWindowInfoPrivateDesktopFileNameExtension *desktopFileNameExtension;
     KWindowInfoPrivatePidExtension *pidExtension;
+    KWindowInfoPrivateAppMenuExtension *appMenuExtension;
 };
 
 KWindowInfoPrivate::Private::Private(WId window, NET::Properties properties, NET::Properties2 properties2)
     : window(window)
     , properties(properties)
     , properties2(properties2)
     , desktopFileNameExtension(nullptr)
     , pidExtension(nullptr)
+    , appMenuExtension(nullptr)
 {
 }
 
@@ -82,6 +87,16 @@
     d->pidExtension = extension;
 }
 
+KWindowInfoPrivateAppMenuExtension *KWindowInfoPrivate::appMenuExtension() const
+{
+    return d->appMenuExtension;
+}
+
+void KWindowInfoPrivate::installAppMenuExtension(KWindowInfoPrivateAppMenuExtension *extension)
+{
+    d->appMenuExtension = extension;
+}
+
 KWindowInfoPrivateDummy::KWindowInfoPrivateDummy(WId window, NET::Properties properties, NET::Properties2 properties2)
     : KWindowInfoPrivate(window, properties, properties2)
 {
@@ -394,6 +409,22 @@
     return QByteArray();
 }
 
+QByteArray KWindowInfo::applicationMenuServiceName() const
+{
+    if (auto extension = d->appMenuExtension()) {
+        return extension->applicationMenuServiceName();
+    }
+    return QByteArray();
+}
+
+QByteArray KWindowInfo::applicationMenuObjectPath() const
+{
+    if (auto extension = d->appMenuExtension()) {
+        return extension->applicationMenuObjectPath();
+    }
+    return QByteArray();
+}
+
 int KWindowInfo::pid() const
 {
     if (auto extension = d->pidExtension()) {
diff --git a/src/kwindowinfo_p.h b/src/kwindowinfo_p.h
--- a/src/kwindowinfo_p.h
+++ b/src/kwindowinfo_p.h
@@ -19,6 +19,7 @@
 
 class KWindowInfoPrivateDesktopFileNameExtension;
 class KWindowInfoPrivatePidExtension;
+class KWindowInfoPrivateAppMenuExtension;
 
 class KWINDOWSYSTEM_EXPORT KWindowInfoPrivate  : public QSharedData
 {
@@ -55,14 +56,16 @@
 
     KWindowInfoPrivateDesktopFileNameExtension *desktopFileNameExtension() const;
     KWindowInfoPrivatePidExtension *pidExtension() const;
+    KWindowInfoPrivateAppMenuExtension *appMenuExtension() const;
 
     static KWindowInfoPrivate *create(WId window, NET::Properties properties, NET::Properties2 properties2);
 
 protected:
     KWindowInfoPrivate(WId window, NET::Properties properties, NET::Properties2 properties2);
 
     void installDesktopFileNameExtension(KWindowInfoPrivateDesktopFileNameExtension *extension);
     void installPidExtension(KWindowInfoPrivatePidExtension *extension);
+    void installAppMenuExtension(KWindowInfoPrivateAppMenuExtension *extension);
 
 private:
     class Private;
@@ -91,4 +94,16 @@
     explicit KWindowInfoPrivatePidExtension();
 };
 
+class KWINDOWSYSTEM_EXPORT KWindowInfoPrivateAppMenuExtension
+{
+public:
+    virtual ~KWindowInfoPrivateAppMenuExtension();
+
+    virtual QByteArray applicationMenuServiceName() const = 0;
+    virtual QByteArray applicationMenuObjectPath() const = 0;
+
+protected:
+    explicit KWindowInfoPrivateAppMenuExtension();
+};
+
 #endif
diff --git a/src/netwm_def.h b/src/netwm_def.h
--- a/src/netwm_def.h
+++ b/src/netwm_def.h
@@ -724,6 +724,8 @@
         WM2OpaqueRegion        = 1u << 25, // @since 5.7
         WM2DesktopFileName     = 1u << 26, // NOT STANDARD @since 5.28
         WM2GTKFrameExtents     = 1u << 27, // NOT STANDARD @since 5.65
+        WM2AppMenuServiceName  = 1u << 28, // NOT STANDARD @since 5.69
+        WM2AppMenuObjectPath   = 1u << 29, // NOT STANDARD @since 5.69
         WM2AllProperties       = ~0u
     };
     Q_DECLARE_FLAGS(Properties2, Property2)
diff --git a/src/platforms/xcb/atoms_p.h b/src/platforms/xcb/atoms_p.h
--- a/src/platforms/xcb/atoms_p.h
+++ b/src/platforms/xcb/atoms_p.h
@@ -143,6 +143,9 @@
     ENUM(_KDE_NET_WM_WINDOW_TYPE_CRITICAL_NOTIFICATION),
     ENUM(_KDE_NET_WM_TEMPORARY_RULES),
     ENUM(_NET_WM_FRAME_OVERLAP),
+    ENUM(_KDE_NET_WM_APPMENU_SERVICE_NAME),
+    ENUM(_KDE_NET_WM_APPMENU_OBJECT_PATH),
+
     // deprecated and naming convention violation
     ENUM(_NET_WM_STATE_STAYS_ON_TOP),
 
diff --git a/src/platforms/xcb/kwindowinfo.cpp b/src/platforms/xcb/kwindowinfo.cpp
--- a/src/platforms/xcb/kwindowinfo.cpp
+++ b/src/platforms/xcb/kwindowinfo.cpp
@@ -36,9 +36,11 @@
     : KWindowInfoPrivate(_win, properties, properties2)
     , KWindowInfoPrivateDesktopFileNameExtension()
     , KWindowInfoPrivatePidExtension()
+    , KWindowInfoPrivateAppMenuExtension()
 {
     installDesktopFileNameExtension(this);
     installPidExtension(this);
+    installAppMenuExtension(this);
 
     KXErrorHandler handler;
     if (properties & NET::WMVisibleIconName) {
@@ -450,6 +452,26 @@
     return QByteArray(m_info->desktopFileName());
 }
 
+QByteArray KWindowInfoPrivateX11::applicationMenuObjectPath() const
+{
+#if !defined(KDE_NO_WARNING_OUTPUT)
+    if (!(m_info->passedProperties2() & NET::WM2AppMenuObjectPath)) {
+        qWarning() << "Pass NET::WM2AppMenuObjectPath to KWindowInfo";
+    }
+#endif
+    return QByteArray(m_info->appMenuObjectPath());
+}
+
+QByteArray KWindowInfoPrivateX11::applicationMenuServiceName() const
+{
+#if !defined(KDE_NO_WARNING_OUTPUT)
+    if (!(m_info->passedProperties2() & NET::WM2AppMenuServiceName)) {
+        qWarning() << "Pass NET::WM2AppMenuServiceName to KWindowInfo";
+    }
+#endif
+    return QByteArray(m_info->appMenuServiceName());
+}
+
 int KWindowInfoPrivateX11::pid() const
 {
     // If pid is found using the XRes extension use that instead.
diff --git a/src/platforms/xcb/kwindowinfo_p_x11.h b/src/platforms/xcb/kwindowinfo_p_x11.h
--- a/src/platforms/xcb/kwindowinfo_p_x11.h
+++ b/src/platforms/xcb/kwindowinfo_p_x11.h
@@ -11,7 +11,7 @@
 
 class NETWinInfo;
 
-class KWindowInfoPrivateX11 : public KWindowInfoPrivate, public KWindowInfoPrivateDesktopFileNameExtension, public KWindowInfoPrivatePidExtension
+class KWindowInfoPrivateX11 : public KWindowInfoPrivate, public KWindowInfoPrivateDesktopFileNameExtension, public KWindowInfoPrivatePidExtension, public KWindowInfoPrivateAppMenuExtension
 {
 public:
     KWindowInfoPrivateX11(WId window, NET::Properties properties, NET::Properties2 properties2);
@@ -44,6 +44,8 @@
     bool actionSupported(NET::Action action) const override;
 
     QByteArray desktopFileName() const override;
+    QByteArray applicationMenuObjectPath() const override;
+    QByteArray applicationMenuServiceName() const override;
 
     int pid() const override;
 
diff --git a/src/platforms/xcb/netwm.h b/src/platforms/xcb/netwm.h
--- a/src/platforms/xcb/netwm.h
+++ b/src/platforms/xcb/netwm.h
@@ -1606,6 +1606,30 @@
      **/
     const char *desktopFileName() const;
 
+    /**
+     * Sets the @p name as the D-BUS service name for the application menu.
+     * @since 5.69
+     **/
+    void setAppMenuServiceName(const char *name);
+
+    /**
+     * Sets the @p name as the D-BUS object path for the application menu.
+     * @since 5.69
+     **/
+    void setAppMenuObjectPath(const char *path);
+
+    /**
+     * @returns The menu service name of the window's application if present.
+     * @since 5.69
+     **/
+    const char *appMenuServiceName() const;
+
+    /**
+     * @returns The menu object path of the window's application if present.
+     * @since 5.69
+     **/
+    const char *appMenuObjectPath() const;
+
     /**
        Sentinel value to indicate that the client wishes to be visible on
        all desktops.
diff --git a/src/platforms/xcb/netwm.cpp b/src/platforms/xcb/netwm.cpp
--- a/src/platforms/xcb/netwm.cpp
+++ b/src/platforms/xcb/netwm.cpp
@@ -155,6 +155,8 @@
         delete [] p->activities;
         delete [] p->client_machine;
         delete [] p->desktop_file;
+        delete [] p->appmenu_object_path;
+        delete [] p->appmenu_service_name;
 
         int i;
         for (i = 0; i < p->icons.size(); i++) {
@@ -1436,6 +1438,14 @@
     else if (atom == p->atom(_GTK_FRAME_EXTENTS)) {
         p->properties2 |= WM2GTKFrameExtents;
     }
+
+    else if (atom == p->atom(_KDE_NET_WM_APPMENU_OBJECT_PATH)) {
+        p->properties2 |= WM2AppMenuObjectPath;
+    }
+
+    else if (atom == p->atom(_KDE_NET_WM_APPMENU_SERVICE_NAME)) {
+        p->properties2 |= WM2AppMenuServiceName;
+    }
 }
 
 void NETRootInfo::setActiveWindow(xcb_window_t window)
@@ -2592,6 +2602,8 @@
     p->icon_sizes = nullptr;
     p->activities = (char *) nullptr;
     p->desktop_file = nullptr;
+    p->appmenu_object_path = nullptr;
+    p->appmenu_service_name = nullptr;
     p->blockCompositing = false;
     p->urgency = false;
     p->input = true;
@@ -2655,6 +2667,8 @@
     p->icon_sizes = nullptr;
     p->activities = (char *) nullptr;
     p->desktop_file = nullptr;
+    p->appmenu_object_path = nullptr;
+    p->appmenu_service_name = nullptr;
     p->blockCompositing = false;
     p->urgency = false;
     p->input = true;
@@ -3509,6 +3523,44 @@
     return p->gtk_frame_extents;
 }
 
+void NETWinInfo::setAppMenuObjectPath(const char *name)
+{
+    if (p->role != Client) {
+        return;
+    }
+
+    delete[] p->appmenu_object_path;
+    p->appmenu_object_path = nstrdup(name);
+
+    xcb_change_property(p->conn, XCB_PROP_MODE_REPLACE, p->window, p->atom(_KDE_NET_WM_APPMENU_OBJECT_PATH),
+                        XCB_ATOM_STRING, 8, strlen(p->appmenu_object_path),
+                        (const void *) p->appmenu_object_path);
+}
+
+void NETWinInfo::setAppMenuServiceName(const char *name)
+{
+    if (p->role != Client) {
+        return;
+    }
+
+    delete[] p->appmenu_service_name;
+    p->appmenu_service_name = nstrdup(name);
+
+    xcb_change_property(p->conn, XCB_PROP_MODE_REPLACE, p->window, p->atom(_KDE_NET_WM_APPMENU_SERVICE_NAME),
+                        XCB_ATOM_STRING, 8, strlen(p->appmenu_service_name),
+                        (const void *) p->appmenu_service_name);
+}
+
+const char *NETWinInfo::appMenuObjectPath() const
+{
+    return p->appmenu_object_path;
+}
+
+const char *NETWinInfo::appMenuServiceName() const
+{
+    return p->appmenu_service_name;
+}
+
 void NETWinInfo::kdeGeometry(NETRect &frame, NETRect &window)
 {
     if (p->win_geom.size.width == 0 || p->win_geom.size.height == 0) {
@@ -3829,6 +3881,10 @@
             dirty2 = WM2FullscreenMonitors;
         } else if (pe->atom == p->atom(_GTK_FRAME_EXTENTS)) {
             dirty2 |= WM2GTKFrameExtents;
+        } else if (pe->atom == p->atom(_KDE_NET_WM_APPMENU_SERVICE_NAME)) {
+            dirty2 |= WM2AppMenuServiceName;
+        } else if (pe->atom == p->atom(_KDE_NET_WM_APPMENU_OBJECT_PATH)) {
+            dirty2 |= WM2AppMenuObjectPath;
         }
 
         do_update = true;
@@ -4024,6 +4080,14 @@
         cookies[c++] = xcb_get_property(p->conn, false, p->window, p->atom(_GTK_FRAME_EXTENTS), XCB_ATOM_CARDINAL, 0, 4);
     }
 
+    if (dirty2 & WM2AppMenuObjectPath) {
+        cookies[c++] = xcb_get_property(p->conn, false, p->window, p->atom(_KDE_NET_WM_APPMENU_OBJECT_PATH), XCB_ATOM_STRING, 0, MAX_PROP_SIZE);
+    }
+
+    if (dirty2 & WM2AppMenuServiceName) {
+        cookies[c++] = xcb_get_property(p->conn, false, p->window, p->atom(_KDE_NET_WM_APPMENU_SERVICE_NAME), XCB_ATOM_STRING, 0, MAX_PROP_SIZE);
+    }
+
     c = 0;
 
     if (dirty & XAWMState) {
@@ -4621,6 +4685,26 @@
             p->gtk_frame_extents.bottom = data[3];
         }
     }
+
+    if (dirty2 & WM2AppMenuObjectPath) {
+        delete[] p->appmenu_object_path;
+        p->appmenu_object_path = nullptr;
+
+        const QByteArray id = get_string_reply(p->conn, cookies[c++], XCB_ATOM_STRING);
+        if (id.length() > 0) {
+            p->appmenu_object_path = nstrndup(id.constData(), id.length());
+        }
+    }
+
+    if (dirty2 & WM2AppMenuServiceName) {
+        delete[] p->appmenu_service_name;
+        p->appmenu_service_name = nullptr;
+
+        const QByteArray id = get_string_reply(p->conn, cookies[c++], XCB_ATOM_STRING);
+        if (id.length() > 0) {
+            p->appmenu_service_name = nstrndup(id.constData(), id.length());
+        }
+    }
 }
 
 NETRect NETWinInfo::iconGeometry() const
diff --git a/src/platforms/xcb/netwm_p.h b/src/platforms/xcb/netwm_p.h
--- a/src/platforms/xcb/netwm_p.h
+++ b/src/platforms/xcb/netwm_p.h
@@ -165,7 +165,7 @@
     xcb_window_t transient_for, window_group;
     xcb_pixmap_t icon_pixmap, icon_mask;
     NET::Actions allowed_actions;
-    char *class_class, *class_name, *window_role, *client_machine, *desktop_file;
+    char *class_class, *class_name, *window_role, *client_machine, *desktop_file, *appmenu_object_path, *appmenu_service_name;
 
     NET::Properties properties;
     NET::Properties2 properties2;