To provide a latch lock, in which a latch can be entered and retracted at a slight angle of rotation and which is miniaturized.

In the lock 1 in which a rod (a connecting member) 16 connected to the latch 14 is driven in response to the rotation of a hub 18 and the latch 14 is projected and retracted from a lock body 10, the lock 1 has a driving piece 22 driving the entering and retraction of the rod 16 in response to the turn of the hub 18, and the driving piece 22 is supported rotatably to the lock body 10, and constituted by providing a driving arm 22b extended from a movable supporting point 22a and engaged with the rod 16 and a rotation transmission means 23 for revolution by interlocking with the turn of the hub 18 between the driving piece 22 and the hub 18.