HEADREST AND VEHICLE SEAT EQUIPPED WITH SAME

It is obtained a headrest and a vehicle seat provided therewith, capable of obtaining attenuating effect characteristics with respect to oscillation at two resonant frequencies with a simple configuration. A mass body (34) is supported by an elastically deformable first urethane member (30) configuring part of a headrest pad (20) inside a headrest cover of a vehicle seat (10). Namely, a dynamic damper (28) is configured including the first urethane member (30) and the mass body (34). The center of gravity (34G) of the mass body (34) is set at a position offset in the seat width direction with respect to the elastic center (30C) of the first urethane member (30).