diff --git a/Userland/Libraries/LibGUI/InputBox.cpp b/Userland/Libraries/LibGUI/InputBox.cpp
index f3c73e3106..3ea6f03a2e 100644
--- a/Userland/Libraries/LibGUI/InputBox.cpp
+++ b/Userland/Libraries/LibGUI/InputBox.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Jakob-Niklas See <git@nwex.de>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,10 +15,11 @@
 
 namespace GUI {
 
-InputBox::InputBox(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title)
+InputBox::InputBox(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title, const StringView& placeholder)
     : Dialog(parent_window)
     , m_text_value(text_value)
     , m_prompt(prompt)
+    , m_placeholder(placeholder)
 {
     set_title(title);
     build();
@@ -27,9 +29,9 @@ InputBox::~InputBox()
 {
 }
 
-int InputBox::show(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title)
+int InputBox::show(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title, const StringView& placeholder)
 {
-    auto box = InputBox::construct(parent_window, text_value, prompt, title);
+    auto box = InputBox::construct(parent_window, text_value, prompt, title, placeholder);
     box->set_resizable(false);
     if (parent_window)
         box->set_icon(parent_window->icon());
@@ -64,6 +66,9 @@ void InputBox::build()
     m_text_editor->set_fixed_height(19);
     m_text_editor->set_text(m_text_value);
 
+    if (!m_placeholder.is_null())
+        m_text_editor->set_placeholder(m_placeholder);
+
     auto& button_container_outer = widget.add<Widget>();
     button_container_outer.set_fixed_height(20);
     button_container_outer.set_layout<VerticalBoxLayout>();
diff --git a/Userland/Libraries/LibGUI/InputBox.h b/Userland/Libraries/LibGUI/InputBox.h
index fda103a366..1bc1d877d0 100644
--- a/Userland/Libraries/LibGUI/InputBox.h
+++ b/Userland/Libraries/LibGUI/InputBox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Jakob-Niklas See <git@nwex.de>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,16 +16,17 @@ class InputBox : public Dialog {
 public:
     virtual ~InputBox() override;
 
-    static int show(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title);
+    static int show(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title, const StringView& placeholder = {});
 
 private:
-    explicit InputBox(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title);
+    explicit InputBox(Window* parent_window, String& text_value, const StringView& prompt, const StringView& title, const StringView& placeholder);
 
     String text_value() const { return m_text_value; }
 
     void build();
     String m_text_value;
     String m_prompt;
+    String m_placeholder;
 
     RefPtr<Button> m_ok_button;
     RefPtr<Button> m_cancel_button;