An arm rest for a door paneling in automobiles, whereby a support member for an arm rest padding has an elongated guiding member at the lower side, the guide member being liftable in guide means, the guide means being fastened to the paneling, in that further locking means for the guide member and the guide means are provided in order lock the guide member in different elevated positions in the guide means and that an actuation element is provided to release the locking means and to allow displacement of the arm rest padding.