diff --git a/macos/Sources/AppDelegate.swift b/macos/Sources/AppDelegate.swift
index 4b0398767..44e11ef28 100644
--- a/macos/Sources/AppDelegate.swift
+++ b/macos/Sources/AppDelegate.swift
@@ -21,6 +21,7 @@ class AppDelegate: NSObject, ObservableObject, NSApplicationDelegate, UNUserNoti
     @IBOutlet private var menuSplitVertical: NSMenuItem?
     @IBOutlet private var menuClose: NSMenuItem?
     @IBOutlet private var menuCloseWindow: NSMenuItem?
+    @IBOutlet private var menuCloseAllWindows: NSMenuItem?
     
     @IBOutlet private var menuCopy: NSMenuItem?
     @IBOutlet private var menuPaste: NSMenuItem?
@@ -218,6 +219,7 @@ class AppDelegate: NSObject, ObservableObject, NSApplicationDelegate, UNUserNoti
         syncMenuShortcut(action: "new_tab", menuItem: self.menuNewTab)
         syncMenuShortcut(action: "close_surface", menuItem: self.menuClose)
         syncMenuShortcut(action: "close_window", menuItem: self.menuCloseWindow)
+        syncMenuShortcut(action: "close_all_windows", menuItem: self.menuCloseAllWindows)
         syncMenuShortcut(action: "new_split:right", menuItem: self.menuSplitHorizontal)
         syncMenuShortcut(action: "new_split:down", menuItem: self.menuSplitVertical)
         
@@ -360,6 +362,11 @@ class AppDelegate: NSObject, ObservableObject, NSApplicationDelegate, UNUserNoti
         NSApp.activate(ignoringOtherApps: true)
     }
     
+    @IBAction func closeAllWindows(_ sender: Any?) {
+        terminalManager.closeAllWindows()
+        AboutController.shared.hide()
+    }
+    
     @IBAction func showAbout(_ sender: Any?) {
         AboutController.shared.show()
     }
diff --git a/macos/Sources/Features/About/AboutController.swift b/macos/Sources/Features/About/AboutController.swift
index 2c6882eea..897e2918b 100644
--- a/macos/Sources/Features/About/AboutController.swift
+++ b/macos/Sources/Features/About/AboutController.swift
@@ -16,8 +16,11 @@ class AboutController: NSWindowController, NSWindowDelegate {
     // MARK: - Functions
     
     func show() {
-        guard let window = window else { return }
-        window.makeKeyAndOrderFront(nil)
+        window?.makeKeyAndOrderFront(nil)
+    }
+    
+    func hide() {
+        window?.close()
     }
     
     //MARK: - First Responder
diff --git a/macos/Sources/Features/Terminal/TerminalManager.swift b/macos/Sources/Features/Terminal/TerminalManager.swift
index c532285ef..24e742971 100644
--- a/macos/Sources/Features/Terminal/TerminalManager.swift
+++ b/macos/Sources/Features/Terminal/TerminalManager.swift
@@ -189,6 +189,52 @@ class TerminalManager {
         }
     }
     
+    /// Close all windows, asking for confirmation if necessary.
+    func closeAllWindows() {
+        var needsConfirm: Bool = false
+        for w in self.windows {
+            if (w.controller.surfaceTree?.needsConfirmQuit() ?? false) {
+                needsConfirm = true
+                break
+            }
+        }
+    
+        if (!needsConfirm) {
+            for w in self.windows {
+                w.controller.close()
+            }
+            
+            return
+        }
+        
+        // If we don't have a main window, we just close all windows because
+        // we have no window to show the modal on top of. I'm sure there's a way
+        // to do an app-level alert but I don't know how and this case should never
+        // really happen.
+        guard let alertWindow = mainWindow?.controller.window else {
+            for w in self.windows {
+                w.controller.close()
+            }
+            
+            return
+        }
+        
+        // If we need confirmation by any, show one confirmation for all windows
+        let alert = NSAlert()
+        alert.messageText = "Close All Windows?"
+        alert.informativeText = "All terminal sessions will be terminated."
+        alert.addButton(withTitle: "Close All Windows")
+        alert.addButton(withTitle: "Cancel")
+        alert.alertStyle = .warning
+        alert.beginSheetModal(for: alertWindow, completionHandler: { response in
+            if (response == .alertFirstButtonReturn) {
+                for w in self.windows {
+                    w.controller.close()
+                }
+            }
+        })
+    }
+    
     /// Relabels all the tabs with the proper keyboard shortcut.
     func relabelAllTabs() {
         for w in windows {
diff --git a/macos/Sources/MainMenu.xib b/macos/Sources/MainMenu.xib
index 69ee9fe38..1b6c88fa3 100644
--- a/macos/Sources/MainMenu.xib
+++ b/macos/Sources/MainMenu.xib
@@ -15,6 +15,7 @@
         <customObject id="bbz-4X-AYv" userLabel="AppDelegate" customClass="AppDelegate" customModule="Ghostty" customModuleProvider="target">
             <connections>
                 <outlet property="menuClose" destination="DVo-aG-piG" id="R3t-0C-aSU"/>
+                <outlet property="menuCloseAllWindows" destination="yKr-Vi-Yqw" id="Zet-Ir-zbm"/>
                 <outlet property="menuCloseWindow" destination="W5w-UZ-crk" id="6ff-BT-ENV"/>
                 <outlet property="menuCopy" destination="Jqf-pv-Zcu" id="bKd-1C-oy9"/>
                 <outlet property="menuDecreaseFontSize" destination="kzb-SZ-dOA" id="Y1B-Vh-6Z2"/>
@@ -134,6 +135,12 @@
                                     <action selector="closeWindow:" target="-1" id="ovs-xn-3ju"/>
                                 </connections>
                             </menuItem>
+                            <menuItem title="Close All Windows" id="yKr-Vi-Yqw">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="closeAllWindows:" target="-1" id="hrz-eb-l5t"/>
+                                </connections>
+                            </menuItem>
                         </items>
                     </menu>
                 </menuItem>
diff --git a/src/Surface.zig b/src/Surface.zig
index f79818738..cb781fe0a 100644
--- a/src/Surface.zig
+++ b/src/Surface.zig
@@ -2885,6 +2885,12 @@ pub fn performBindingAction(self: *Surface, action: input.Binding.Action) !bool
 
         .close_window => try self.app.closeSurface(self),
 
+        .close_all_windows => {
+            if (@hasDecl(apprt.Surface, "closeAllWindows")) {
+                self.rt_surface.closeAllWindows();
+            } else log.warn("runtime doesn't implement closeAllWindows", .{});
+        },
+
         .quit => try self.app.setQuit(),
     }
 
diff --git a/src/config/Config.zig b/src/config/Config.zig
index 1275c8a82..5c4109223 100644
--- a/src/config/Config.zig
+++ b/src/config/Config.zig
@@ -1183,6 +1183,11 @@ pub fn default(alloc_gpa: Allocator) Allocator.Error!Config {
             .{ .key = .w, .mods = .{ .super = true, .shift = true } },
             .{ .close_window = {} },
         );
+        try result.keybind.set.put(
+            alloc,
+            .{ .key = .w, .mods = .{ .super = true, .shift = true, .alt = true } },
+            .{ .close_all_windows = {} },
+        );
         try result.keybind.set.put(
             alloc,
             .{ .key = .t, .mods = .{ .super = true } },
diff --git a/src/input/Binding.zig b/src/input/Binding.zig
index 19bdcdc27..95449b60a 100644
--- a/src/input/Binding.zig
+++ b/src/input/Binding.zig
@@ -221,12 +221,18 @@ pub const Action = union(enum) {
     reload_config: void,
 
     /// Close the current "surface", whether that is a window, tab, split,
-    /// etc. This only closes ONE surface.
+    /// etc. This only closes ONE surface. This will trigger close confirmation
+    /// as configured.
     close_surface: void,
 
     /// Close the window, regardless of how many tabs or splits there may be.
+    /// This will trigger close confirmation as configured.
     close_window: void,
 
+    /// Close all windows. This will trigger close confirmation as configured.
+    /// This only works for macOS currently.
+    close_all_windows: void,
+
     /// Toggle fullscreen mode of window.
     toggle_fullscreen: void,