diff --git a/editor/editor_node.cpp b/editor/editor_node.cpp
index 6f14a4568a2..2d867ed8c27 100644
--- a/editor/editor_node.cpp
+++ b/editor/editor_node.cpp
@@ -482,6 +482,10 @@ void EditorNode::_update_theme(bool p_skip_creation) {
 		}
 	}
 
+	if (CanvasItemEditor::get_singleton()->get_theme_preview() == CanvasItemEditor::THEME_PREVIEW_EDITOR) {
+		update_preview_themes(CanvasItemEditor::THEME_PREVIEW_EDITOR);
+	}
+
 	gui_base->add_theme_style_override("panel", theme->get_stylebox(SNAME("Background"), EditorStringName(EditorStyles)));
 	main_vbox->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT, Control::PRESET_MODE_MINSIZE, theme->get_constant(SNAME("window_border_margin"), EditorStringName(Editor)));
 	main_vbox->add_theme_constant_override("separation", theme->get_constant(SNAME("top_bar_separation"), EditorStringName(Editor)));
@@ -534,6 +538,36 @@ void EditorNode::_update_theme(bool p_skip_creation) {
 	}
 }
 
+void EditorNode::update_preview_themes(int p_mode) {
+	if (!scene_root->is_inside_tree()) {
+		return; // Too early.
+	}
+
+	List<Ref<Theme>> preview_themes;
+
+	switch (p_mode) {
+		case CanvasItemEditor::THEME_PREVIEW_PROJECT:
+			preview_themes.push_back(ThemeDB::get_singleton()->get_project_theme());
+			break;
+
+		case CanvasItemEditor::THEME_PREVIEW_EDITOR:
+			preview_themes.push_back(get_editor_theme());
+			break;
+
+		default:
+			break;
+	}
+
+	preview_themes.push_back(ThemeDB::get_singleton()->get_default_theme());
+
+	ThemeContext *preview_context = ThemeDB::get_singleton()->get_theme_context(scene_root);
+	if (preview_context) {
+		preview_context->set_themes(preview_themes);
+	} else {
+		ThemeDB::get_singleton()->create_theme_context(scene_root, preview_themes);
+	}
+}
+
 void EditorNode::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_PROCESS: {
@@ -668,11 +702,9 @@ void EditorNode::_notification(int p_what) {
 
 			_titlebar_resized();
 
-			// Set up a theme context for the 2D preview viewport using the project theme.
-			List<Ref<Theme>> preview_themes;
-			preview_themes.push_back(ThemeDB::get_singleton()->get_project_theme());
-			preview_themes.push_back(ThemeDB::get_singleton()->get_default_theme());
-			ThemeDB::get_singleton()->create_theme_context(scene_root, preview_themes);
+			// Set up a theme context for the 2D preview viewport using the stored preview theme.
+			CanvasItemEditor::ThemePreviewMode theme_preview_mode = (CanvasItemEditor::ThemePreviewMode)(int)EditorSettings::get_singleton()->get_project_metadata("2d_editor", "theme_preview", CanvasItemEditor::THEME_PREVIEW_PROJECT);
+			update_preview_themes(theme_preview_mode);
 
 			/* DO NOT LOAD SCENES HERE, WAIT FOR FILE SCANNING AND REIMPORT TO COMPLETE */
 		} break;
diff --git a/editor/editor_node.h b/editor/editor_node.h
index 1119f6b896b..a83570b2ea8 100644
--- a/editor/editor_node.h
+++ b/editor/editor_node.h
@@ -851,6 +851,8 @@ public:
 	void stop_child_process(OS::ProcessID p_pid);
 
 	Ref<Theme> get_editor_theme() const { return theme; }
+	void update_preview_themes(int p_mode);
+
 	Ref<Script> get_object_custom_type_base(const Object *p_object) const;
 	StringName get_object_custom_type_name(const Object *p_object) const;
 	Ref<Texture2D> get_object_icon(const Object *p_object, const String &p_fallback = "Object");
diff --git a/editor/plugins/canvas_item_editor_plugin.cpp b/editor/plugins/canvas_item_editor_plugin.cpp
index b2f4e430183..703cd7ef81f 100644
--- a/editor/plugins/canvas_item_editor_plugin.cpp
+++ b/editor/plugins/canvas_item_editor_plugin.cpp
@@ -1034,6 +1034,22 @@ void CanvasItemEditor::_on_grid_menu_id_pressed(int p_id) {
 	viewport->queue_redraw();
 }
 
+void CanvasItemEditor::_switch_theme_preview(int p_mode) {
+	view_menu->get_popup()->hide();
+
+	if (theme_preview == p_mode) {
+		return;
+	}
+	theme_preview = (ThemePreviewMode)p_mode;
+	EditorSettings::get_singleton()->set_project_metadata("2d_editor", "theme_preview", theme_preview);
+
+	for (int i = 0; i < THEME_PREVIEW_MAX; i++) {
+		theme_menu->set_item_checked(i, i == theme_preview);
+	}
+
+	EditorNode::get_singleton()->update_preview_themes(theme_preview);
+}
+
 bool CanvasItemEditor::_gui_input_rulers_and_guides(const Ref<InputEvent> &p_event) {
 	EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
 	Ref<InputEventMouseButton> b = p_event;
@@ -5322,6 +5338,20 @@ CanvasItemEditor::CanvasItemEditor() {
 	p->add_separator();
 	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/preview_canvas_scale", TTR("Preview Canvas Scale")), PREVIEW_CANVAS_SCALE);
 
+	theme_menu = memnew(PopupMenu);
+	theme_menu->connect("id_pressed", callable_mp(this, &CanvasItemEditor::_switch_theme_preview));
+	theme_menu->set_name("ThemeMenu");
+	theme_menu->add_radio_check_item(TTR("Project theme"), THEME_PREVIEW_PROJECT);
+	theme_menu->add_radio_check_item(TTR("Editor theme"), THEME_PREVIEW_EDITOR);
+	theme_menu->add_radio_check_item(TTR("Default theme"), THEME_PREVIEW_DEFAULT);
+	p->add_child(theme_menu);
+	p->add_submenu_item(TTR("Preview Theme"), "ThemeMenu");
+
+	theme_preview = (ThemePreviewMode)(int)EditorSettings::get_singleton()->get_project_metadata("2d_editor", "theme_preview", THEME_PREVIEW_PROJECT);
+	for (int i = 0; i < THEME_PREVIEW_MAX; i++) {
+		theme_menu->set_item_checked(i, i == theme_preview);
+	}
+
 	main_menu_hbox->add_child(memnew(VSeparator));
 
 	// Contextual toolbars.
diff --git a/editor/plugins/canvas_item_editor_plugin.h b/editor/plugins/canvas_item_editor_plugin.h
index 74f150fd65c..674f38c8c07 100644
--- a/editor/plugins/canvas_item_editor_plugin.h
+++ b/editor/plugins/canvas_item_editor_plugin.h
@@ -325,6 +325,7 @@ private:
 	Button *override_camera_button = nullptr;
 	MenuButton *view_menu = nullptr;
 	PopupMenu *grid_menu = nullptr;
+	PopupMenu *theme_menu = nullptr;
 	HBoxContainer *animation_hb = nullptr;
 	MenuButton *animation_menu = nullptr;
 
@@ -404,6 +405,19 @@ private:
 	void _prepare_grid_menu();
 	void _on_grid_menu_id_pressed(int p_id);
 
+public:
+	enum ThemePreviewMode {
+		THEME_PREVIEW_PROJECT,
+		THEME_PREVIEW_EDITOR,
+		THEME_PREVIEW_DEFAULT,
+
+		THEME_PREVIEW_MAX // The number of options for enumerating.
+	};
+
+private:
+	ThemePreviewMode theme_preview = THEME_PREVIEW_PROJECT;
+	void _switch_theme_preview(int p_mode);
+
 	List<CanvasItem *> _get_edited_canvas_items(bool retrieve_locked = false, bool remove_canvas_item_if_parent_in_selection = true) const;
 	Rect2 _get_encompassing_rect_from_list(List<CanvasItem *> p_list);
 	void _expand_encompassing_rect_using_children(Rect2 &r_rect, const Node *p_node, bool &r_first, const Transform2D &p_parent_xform = Transform2D(), const Transform2D &p_canvas_xform = Transform2D(), bool include_locked_nodes = true);
@@ -558,6 +572,8 @@ public:
 
 	virtual CursorShape get_cursor_shape(const Point2 &p_pos) const override;
 
+	ThemePreviewMode get_theme_preview() const { return theme_preview; }
+
 	EditorSelection *editor_selection = nullptr;
 
 	CanvasItemEditor();