Vehicle seat

A vehicle seat includes side frames and plate-shaped brackets. The side frames include cushion side frames disposed to a left and to a right of a seat cushion and back side frames disposed to a left and to a right of a seatback. The plate-shaped brackets are fixed to rear end portions of the cushion side frames to support the back side frames. Each of the brackets includes a first plate shaped part fixed to a corresponding back side frame and a second plate shaped part fixed to a corresponding cushion side frame. The first plate-shaped part is disposed outwardly in the left-right direction relative to a corresponding back side frame, and the second plate-shaped part is disposed inwardly in the left-right direction relative to a corresponding cushion side frame.