Vehicle seat and commercial motor vehicle with a vehicle seat

The invention relates to a vehicle seat (1), in particular a commercial vehicle seat (1A), comprising a seat part (2), a backrest (3) comprising a backrest lower part (16) and a backrest upper part (17), and a holding device (25), by means of which the backrest upper part (17) is held displaceable relative to the backrest lower part (16), wherein the holding device (25) has a guide device (26), by means of which the backrest upper part (17) is displaceable in a linearly movable manner along a displacement curve (27) laterally over at least one side edge (4) of the backrest lower part (16) such that the backrest upper part (17) additionally rotates about the displacement curve (27) and/or about a transverse axis (35) running transversely to the displacement curve (27) during lateral displacement.