diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -43,6 +43,7 @@
   ktitlewidget.cpp
   ktoggleaction.cpp
   ktogglefullscreenaction.cpp
+  ktoggleshowmenubaraction.cpp
   kviewstateserializer.cpp
   kviewstatemaintainerbase.cpp
   keditlistwidget.cpp
@@ -149,6 +150,7 @@
   KSqueezedTextLabel
   KToggleAction
   KToggleFullScreenAction
+  KToggleShowMenuBarAction
   KViewStateSerializer
   KViewStateMaintainerBase
   KEditListWidget
@@ -232,6 +234,7 @@
       ksqueezedtextlabel.h
       ktoggleaction.h
       ktogglefullscreenaction.h
+      ktoggleshowmenubaraction.h
       kviewstateserializer.h
       kviewstatemaintainerbase.h
       keditlistwidget.h
diff --git a/src/ktoggleshowmenubaraction.h b/src/ktoggleshowmenubaraction.h
new file mode 100644
--- /dev/null
+++ b/src/ktoggleshowmenubaraction.h
@@ -0,0 +1,88 @@
+/* This file is part of the KDE libraries
+    Copyright (C) 2018 Luca Sartorelli <dj3mb3@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2 as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef KTOGGLESHOWMENUBARACTION_H
+#define KTOGGLESHOWMENUBARACTION_H
+
+#include <ktoggleaction.h>
+
+/**
+ * @class KToggleShowMenuBarAction KToggleShowMenuBarAction.h KToggleShowMenuBarAction
+ *
+ * An action to hide or show the menubar of a window.
+ * The action by default remind the user how to show
+ * the menu bar using the keyboard shortcut.
+ *
+ * @author Luca Sartorelli <dj3mb3@gmail.com>
+ */
+class KWIDGETSADDONS_EXPORT KToggleShowMenuBarAction : public KToggleAction
+{
+    Q_OBJECT
+
+public:
+    /**
+     * Create a KToggleShowMenuBarAction. Call setWindow() to associate this
+     * action with a parent window for the message box.
+     *
+     * @param parent This action's parent object.
+     */
+    explicit KToggleShowMenuBarAction(QObject *parent);
+
+    /**
+     * Create a KToggleShowMenuBarAction
+     * @param window the parent window to be associated to the message box.
+     * @param parent This action's parent object.
+     */
+    KToggleShowMenuBarAction(QWidget *window, QObject *parent);
+
+    /**
+     * Destroys the toggle show menubar action.
+     */
+    ~KToggleShowMenuBarAction() override;
+
+    /**
+     * Sets the parent window for message box with the user reminder.
+     * @param window the window that will be parent for the message box
+     * @since 5.54
+     */
+    void setWindow(QWidget *window);
+
+    /**
+     * If set to true, this action will remind the user through a message box
+     * on how to show the menu bar again, using the keyboard shortcut.
+     * Default: false
+     * @param show the window that will switch to/from full screen mode
+     * @since 5.54
+     */
+    void setShowMessage(bool show);
+
+    /**
+     * @returns true if the user reminder needs to be shown.
+     * @since 5.54
+     */
+    bool showMessage();
+
+protected Q_SLOTS:
+    void slotToggled(bool checked) override;
+
+private:
+    class Private;
+    Private *const d;
+};
+
+#endif
diff --git a/src/ktoggleshowmenubaraction.cpp b/src/ktoggleshowmenubaraction.cpp
new file mode 100644
--- /dev/null
+++ b/src/ktoggleshowmenubaraction.cpp
@@ -0,0 +1,86 @@
+/* This file is part of the KDE libraries
+    Copyright (C) 2018 Luca Sartorelli <dj3mb3@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2 as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#include "ktoggleshowmenubaraction.h"
+
+#include <KMessageBox>
+
+#include <QEvent>
+
+class Q_DECL_HIDDEN KToggleShowMenuBarAction::Private
+{
+public:
+    Private(KToggleShowMenuBarAction *action)
+        : q(action)
+        , window(nullptr)
+        , showMessage(false)
+    {
+    }
+
+    KToggleShowMenuBarAction *q;
+    QWidget *window;
+    bool showMessage;
+};
+
+KToggleShowMenuBarAction::KToggleShowMenuBarAction(QObject *parent)
+    : KToggleAction(parent),
+      d(new Private(this))
+{
+}
+
+KToggleShowMenuBarAction::KToggleShowMenuBarAction(QWidget *window, QObject *parent)
+    : KToggleAction(parent),
+      d(new Private(this))
+{
+    setWindow(window);
+}
+
+KToggleShowMenuBarAction::~KToggleShowMenuBarAction()
+{
+    delete d;
+}
+
+void KToggleShowMenuBarAction::setWindow(QWidget *window)
+{
+    d->window = window;
+}
+
+void KToggleShowMenuBarAction::setShowMessage(bool show)
+{
+    d->showMessage = show;
+}
+
+bool KToggleShowMenuBarAction::showMessage()
+{
+    return d->showMessage;
+}
+
+void KToggleShowMenuBarAction::slotToggled(bool checked)
+{
+    if (!checked && d->showMessage)
+    {
+        QKeySequence keySeq = d->q->shortcut();
+        if (!keySeq.isEmpty())
+            KMessageBox::information(d->window, tr("This will hide the menu bar completely."
+                                                " You can show it again by pressing %1.").arg(keySeq.toString(QKeySequence::NativeText)),
+                                                tr("Hide menu bar"),
+                                                QStringLiteral("HideMenuBarWarning"));
+    }
+
+    KToggleAction::slotToggled(checked);
+}