A headrest design described herein improves rigidity and reduces weight of an entire headrest of a vehicle seat. The headrest of the vehicle seat includes a base member attached to an upper part of a seat back, and a reinforcing member attached to the base member. The base member is formed by coupling a front side base member and a back side base member by a coupling member. The reinforcing member includes attachment portions and projection portions having larger width therebetween than that of the attachment portions. The attachment portions are fixed to a front side of a front side base member. The projection portions continue from the attachment portions and protrude to the upper side of the base member.