Abstract: An electromechanical door lock comprises a lock body, which includes a bolt movable between a protruding locking position and a withdrawn releasing position by an electromechanical force transmission mechanism, a dead-locking element for dead-locking the bolt and an operating axis provided with a manual force transmission mechanism for moving the bolt and the dead-locking element. The lock body includes a coupling mechanism having a first position, in which it provides force transmission connection from both the manual force transmission mechanism and the electromechanical force transmission mechanism to the bolt. The coupling mechanism is movable by means of the key operable force transmission mechanism into a second position, in which the force transmission connection from the electromechanical force transmission mechanism to the bolt is disconnected so that the bolt is movable only through the manual force transmission mechanism.