diff --git a/bleak/__init__.py b/bleak/__init__.py
index 95a2d3b1..facd153c 100644
--- a/bleak/__init__.py
+++ b/bleak/__init__.py
@@ -329,6 +329,19 @@ def address(self) -> str:
         """
         return self._backend.address
 
+    @property
+    def mtu_size(self) -> int:
+        """
+        Gets the negotiated MTU size in bytes for the active connection.
+
+        Consider using :attr:`bleak.backends.characteristic.BleakGATTCharacteristic.max_write_without_response_size` instead.
+
+        .. warning:: The BlueZ backend will always return 23 (the minimum MTU size).
+            See the ``mtu_size.py`` example for a way to hack around this.
+
+        """
+        return self._backend.mtu_size
+
     def __str__(self):
         return f"{self.__class__.__name__}, {self.address}"
 
diff --git a/bleak/backends/client.py b/bleak/backends/client.py
index 654ebb7f..6bcdf760 100644
--- a/bleak/backends/client.py
+++ b/bleak/backends/client.py
@@ -49,6 +49,12 @@ def __init__(self, address_or_ble_device: Union[BLEDevice, str], **kwargs):
         self._timeout = kwargs.get("timeout", 10.0)
         self._disconnected_callback = kwargs.get("disconnected_callback")
 
+    @property
+    @abc.abstractmethod
+    def mtu_size(self) -> int:
+        """Gets the negotiated MTU."""
+        raise NotImplementedError
+
     # Connectivity methods
 
     def set_disconnected_callback(
diff --git a/docs/api/client.rst b/docs/api/client.rst
index 59a237e8..b255f1e7 100644
--- a/docs/api/client.rst
+++ b/docs/api/client.rst
@@ -49,6 +49,8 @@ Device information
 
 .. autoproperty:: bleak.BleakClient.address
 
+.. autoproperty:: bleak.BleakClient.mtu_size
+
 
 ----------------------
 GATT Client Operations