A vehicle seat apparatus includes a vehicle seat; a swiveling drive unit that swivels the vehicle seat between a frontward-oriented position in which the vehicle seat faces the front of a vehicle and at least one of an outward-oriented position in which the vehicle seat is oriented in the outward direction of the vehicle and an inward-oriented position in which the vehicle seat is oriented in the inward direction of the vehicle; an occupant condition detection unit that detects the condition of an occupant in the vehicle; and a control unit that controls the swiveling drive unit based on the detection result obtained by the occupant condition detection unit. With this configuration, it is possible to further increase the comfort of a passenger compartment based on the condition of the occupants in the vehicle.