Abstract: A back rest for a vehicle seat is adjustable in its angle of inclination about a pivot axis running in the direction lateral to the back can also be folded about a folding axis lying parallel to the pivot axis to facilitate access to the rear seat of the vehicle by releasing folding locks which are provided on respective sides of the back rest. The folding locks are provided with a locking member which is movable between a locking position and a release position. Each locking member is connected with one end of a cable, the other end of which is connected with an activating device arranged on the supporting portions of the back rest. The activating device has a support for a bolt, the support being immovable relative to the back rest. A double-armed pivot lever is arranged on the bolt, and the two arms of the lever are connected with respective cores of the cables at a distance from the rotational axis of the lever.