Chair; Car seat; Airline seat; Saddle, a type of seat used on the backs of animals, bicycles (see bicycle seat), etc.; Buttocks, the part of the body on which one sits; A booking in theatres, football stadiums, and similar places;

A place or office of authority:

Chair (official), a seat of office, authority, or dignity. See chairperson.; Legislative seat, a membership in a parliament or other legislature; Seat (legal entity), indicating where the headquarters of the entity are located; The capital city of an administrative region, such as:

County seat; Provincial seat; Canton seat; Clan seat;

; Country seat, a place in the country; Throne, the original seat of authority from which others may be derived; Seat (latin: sedes) territorial-administrative unit in the medieval Hungarian Kingdom;

Other:

SEAT, a Spanish car manufacturer, now owned by the Volkswagen Group (AG); Seat Pagine Gialle, the Italian Yellow Pages group; Single Engine Air Tanker;