In a vehicle seat including an adjustment device configured to move a front end of a seat cushion to adjust the length of the seat cushion in a front-to-back direction, the adjustment device has a support portion movable back and forth relative to a seat cushion frame, and a roller portion rotatably supported by the support portion and configured such that a pad material is wound around an outer peripheral portion at a front end portion of the seat cushion. The length of the seat cushion is adjustable by a change in an amount of winding of the pad material around the outer peripheral portion corresponding to a rotation of the roller portion during front-to-back movement of the support portion. The outer peripheral portion of the roller portion is made of a soft material.