To provide a coin return type electric lock for a locker which can be used with free of charge in its function.

An electric lock 1 capable of locking and/or unlocking a latch lever by inserting and turning an operating portion of a key housing an electronic tag to be inserted to a tag catcher 2 comprises a coin passage 3 having a coin inlet 3A at its upper side and a coin return outlet 3B at its lower side; a coin stopper 5 making a coin "a" vibratory which is inserted from the coin inlet 3A to the coin passage between a primary retaining position and a secondary retaining position; and a lock lever 4 which makes a tag catcher 2 rotatable at the primary retaining position inside the coin passage 3, thereby permitting the locking of the locker by means of the latch lever 2A at the secondary retaining position of the coin "a" inside the coin passage 3 previously determined by the coin stopper 5.