VEHICLE SEAT

A cushion support member includes: a lower region whose left-right full width is less than an interval between a pair of side frames of a seat back frame an upper region located above the lower region and having a left-right full width greater than the lower region the upper region is divided into a central region including a central part in the left-right direction and provided with a predetermined left-right width, and outer regions provided on outer sides with respect to the central region in the left-right direction, and the central region is arranged as a retracted region which is cut off to leave the outer regions or is recessed to a side opposite to a cushion member with respect to the outer regions