A locking device, in particular for a vehicle seat, includes a latch (24) and a counter element that interacts for locking. A bearing bush (30), a release element (32) that is rotationally mounted inside the bearing bush (30) and a catch element (34) for reinforcing the latch (24) in the event of a crash are provided with the catch element (34) being mounted in a rotationally secure manner on the release element (32) or being embodied as one piece with the release element. A tightening element (36), for securing the locked latch (24) during normal operation, is arranged in an axial manner adjacent to said catch element (34) and is mounted in a pivotable manner and is prestressed in such a manner that it is pivotably mounted on the outside on the bearing bush (30).