A vehicle seat is equipped with a base frame, a seatback and a seat cushion. A lower end side of a seatback frame is joined to the base frame via a recliner shaft. A cushion joining portion is provided at a front end side of the lower end side of the seatback frame relative to the recliner shaft. The cushion joining portion turns to a seat lower side and seat rearward side about the recliner shaft when the seatback is tilted forward. A rear end side of a seat cushion frame is joined to the cushion joining portion to be turnable about a joining shaft. A front portion side of the seat cushion frame is supported at the base frame to be movable to follow the turning of the cushion joining portion when the seatback is tilted forward.