To provide an automobile seat having excellent usability and an excellent functional property.

This automobile seat is composed of a seat back 12 and a seat cushion 11 to allow a plurality of persons to seat. The seat back 12 is divided into at least four segments 12A to 12G in the direction of a vehicle width, and each divided segment turns to a seat cushion 11 side. The segments 12A to 12G are selectively turned to the seat cushion 11 side and are arranged and constituted as a functional member functioning as at least an arm rest or a cushion.