To reduce an amount of rear protrusion of a vehicle seat equipped with an airbag module configured to deploy rearward, in a vehicle seat provided with a seat cushion and a seat back, the seat back includes: a seat back frame including a pair of left and right side frames extending in a vertical direction and an upper frame connecting upper ends of the side frames to each other; an airbag module supported by an upper half of the seat back frame via a bracket; and a skin member covering the seat back frame, the bracket, and the airbag module from a rear side thereof, wherein a part of the skin member corresponding to the airbag module is provided with a frangible portion configured to open upon inflation of an airbag.