diff --git a/docs/configuration.md b/docs/configuration.md
index 8e59c0ab0ad..3404560dba4 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -614,6 +614,30 @@ editing the `conf` file in a text editor. Use the examples as reference.
     </tr>
 </table>
 
+### key_leftalt_to_key_cmd
+
+<table>
+    <tr>
+        <td>Description</td>
+        <td colspan="2">
+            On macOS, map the Left Alt key from Moonlight to the left Command key. This can be useful when the client cannot send the Windows key directly.
+            @caution{Applies to macOS only.}
+        </td>
+    </tr>
+    <tr>
+        <td>Default</td>
+        <td colspan="2">@code{}
+            disabled
+            @endcode</td>
+    </tr>
+    <tr>
+        <td>Example</td>
+        <td colspan="2">@code{}
+            key_leftalt_to_key_cmd = enabled
+            @endcode</td>
+    </tr>
+</table>
+
 ### mouse
 
 <table>
diff --git a/src/config.cpp b/src/config.cpp
index a79f7d88151..7dae8809177 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -580,6 +580,7 @@ namespace config {
     true,  // mouse enabled
     true,  // controller enabled
     true,  // always send scancodes
+    false,  // map left alt to command on macOS
     true,  // high resolution scrolling
     true,  // native pen/touch support
   };
@@ -1279,6 +1280,8 @@ namespace config {
       input.keybindings.emplace(0xA5, 0x5B);
     }
 
+    bool_f(vars, "key_leftalt_to_key_cmd", input.key_leftalt_to_key_cmd);
+
     to = std::numeric_limits<int>::min();
     int_f(vars, "back_button_timeout", to);
 
diff --git a/src/config.h b/src/config.h
index eb778a3ac68..d4489d2e492 100644
--- a/src/config.h
+++ b/src/config.h
@@ -212,6 +212,7 @@ namespace config {
     bool controller;
 
     bool always_send_scancodes;
+    bool key_leftalt_to_key_cmd;
 
     bool high_resolution_scrolling;
     bool native_pen_touch;
diff --git a/src/platform/macos/input.cpp b/src/platform/macos/input.cpp
index d3bf20057ba..00dcab499eb 100644
--- a/src/platform/macos/input.cpp
+++ b/src/platform/macos/input.cpp
@@ -14,6 +14,7 @@
 #include <mach/mach.h>
 
 // local includes
+#include "src/config.h"
 #include "src/display_device.h"
 #include "src/input.h"
 #include "src/logging.h"
@@ -229,6 +230,10 @@ const KeyCodeMap kKeyCodesMap[] = {
   // clang-format on
 
   int keysym(int keycode) {
+    if (config::input.key_leftalt_to_key_cmd && keycode == 0xA4 /* VKEY_LMENU */) {
+      return kVK_Command;
+    }
+
     KeyCodeMap key_map {};
 
     key_map.win_keycode = keycode;
diff --git a/src_assets/common/assets/web/config.html b/src_assets/common/assets/web/config.html
index 513932a2cf9..bbb34b48969 100644
--- a/src_assets/common/assets/web/config.html
+++ b/src_assets/common/assets/web/config.html
@@ -209,6 +209,7 @@ <h1 class="my-4">{{ $t('config.configuration') }}</h1>
               "key_repeat_frequency": 24.9,
               "always_send_scancodes": "enabled",
               "key_rightalt_to_key_win": "disabled",
+              "key_leftalt_to_key_cmd": "disabled",
               "mouse": "enabled",
               "high_resolution_scrolling": "enabled",
               "native_pen_touch": "enabled",
diff --git a/src_assets/common/assets/web/configs/tabs/Inputs.vue b/src_assets/common/assets/web/configs/tabs/Inputs.vue
index 7fa76a20721..aa91a839325 100644
--- a/src_assets/common/assets/web/configs/tabs/Inputs.vue
+++ b/src_assets/common/assets/web/configs/tabs/Inputs.vue
@@ -155,6 +155,15 @@ const config = ref(props.config)
               default="false"
     ></Checkbox>
 
+    <!-- Mapping Key AltLeft to Key Command -->
+    <Checkbox v-if="config.keyboard === 'enabled' && platform === 'macos'"
+              class="mb-3"
+              id="key_leftalt_to_key_cmd"
+              locale-prefix="config"
+              v-model="config.key_leftalt_to_key_cmd"
+              default="false"
+    ></Checkbox>
+
     <!-- Enable Mouse Input -->
     <hr>
     <Checkbox class="mb-3"
diff --git a/src_assets/common/assets/web/public/assets/locale/en.json b/src_assets/common/assets/web/public/assets/locale/en.json
index 30289b1eebc..b3dd04c44e5 100644
--- a/src_assets/common/assets/web/public/assets/locale/en.json
+++ b/src_assets/common/assets/web/public/assets/locale/en.json
@@ -252,6 +252,8 @@
     "key_repeat_frequency_desc": "How often keys repeat every second. This configurable option supports decimals.",
     "key_rightalt_to_key_win": "Map Right Alt key to Windows key",
     "key_rightalt_to_key_win_desc": "It may be possible that you cannot send the Windows Key from Moonlight directly. In those cases it may be useful to make Sunshine think the Right Alt key is the Windows key",
+    "key_leftalt_to_key_cmd": "Map Left Alt key to Command key",
+    "key_leftalt_to_key_cmd_desc": "On macOS, map the Left Alt key from Moonlight to the left Command key. This can be useful when the client cannot send the Windows key directly.",
     "keybindings": "Keybindings",
     "keyboard": "Enable Keyboard Input",
     "keyboard_desc": "Allows guests to control the host system with the keyboard",
diff --git a/src_assets/common/assets/web/public/assets/locale/en_GB.json b/src_assets/common/assets/web/public/assets/locale/en_GB.json
index 8ee9d5f37ed..4ed1eb8e2ab 100644
--- a/src_assets/common/assets/web/public/assets/locale/en_GB.json
+++ b/src_assets/common/assets/web/public/assets/locale/en_GB.json
@@ -249,6 +249,8 @@
     "key_repeat_frequency_desc": "How often keys repeat every second. This configurable option supports decimals.",
     "key_rightalt_to_key_win": "Map Right Alt key to Windows key",
     "key_rightalt_to_key_win_desc": "It may be possible that you cannot send the Windows Key from Moonlight directly. In those cases it may be useful to make Sunshine think the Right Alt key is the Windows key",
+    "key_leftalt_to_key_cmd": "Map Left Alt key to Command key",
+    "key_leftalt_to_key_cmd_desc": "On macOS, map the Left Alt key from Moonlight to the left Command key. This can be useful when the client cannot send the Windows key directly.",
     "keybindings": "Keybindings",
     "keyboard": "Enable Keyboard Input",
     "keyboard_desc": "Allows guests to control the host system with the keyboard",
diff --git a/src_assets/common/assets/web/public/assets/locale/en_US.json b/src_assets/common/assets/web/public/assets/locale/en_US.json
index f2cc95b383c..46c6365a2f4 100644
--- a/src_assets/common/assets/web/public/assets/locale/en_US.json
+++ b/src_assets/common/assets/web/public/assets/locale/en_US.json
@@ -249,6 +249,8 @@
     "key_repeat_frequency_desc": "How often keys repeat every second. This configurable option supports decimals.",
     "key_rightalt_to_key_win": "Map Right Alt key to Windows key",
     "key_rightalt_to_key_win_desc": "It may be possible that you cannot send the Windows Key from Moonlight directly. In those cases it may be useful to make Sunshine think the Right Alt key is the Windows key",
+    "key_leftalt_to_key_cmd": "Map Left Alt key to Command key",
+    "key_leftalt_to_key_cmd_desc": "On macOS, map the Left Alt key from Moonlight to the left Command key. This can be useful when the client cannot send the Windows key directly.",
     "keybindings": "Keybindings",
     "keyboard": "Enable Keyboard Input",
     "keyboard_desc": "Allows guests to control the host system with the keyboard",