The vehicle seat of the present disclosure has a base unit, a tray, and a connection terminal. The base unit is disposed on a rear side of the backrest and has a storage section. The tray has a through-hole or a notch which a connection device of a predetermined size passes and is disposed so as to be movable between a storage position located in the storage section of the base unit and an open position of the tray unfolded from the storage position. The connection terminal that is disposed on the base unit at a position that meets with the through-hole or the notch of the tray located at the storage position.