The invention relates to a lock identifier assembly for locks with a cover with a main body, a hollow projection and a knob housed in the hollow projection and with a knob ramp. It comprises a tongue, with a recess and a tongue ramp, linked to the knob ramp such that when the knob is actuated, the knob ramp moves, moving the tongue with it to lock/unlock the lock. There is an identification element housed in the hollow projection that has a guide element housed in the recess of the tongue and which is movable on the tongue ramp. When the tongue is moved by the knob, the identification element moves longitudinally in the hollow projection between a position in which it is hidden in said projection and a position in which it projects superiorly from an upper end of said hollow projection.