A vehicle seat includes: a seating part that constitutes the vehicle seat; a support member that rotatably supports a portion of the seating part; an elastic member having a first end and a second end, the first end being attached to a movable portion of the seating part which is capable of rotating about the support member and the second end being attached to the seat frame; and an attenuation device that attenuates a motion of the movable portion when the movable portion moves from a seated state with a load applied, back to a normal state in which the applied load is removed. The movable portion of the seating part may include a base member, a slab member provided on the base member, and a surface member that covers the slab member.