Ōza (王座) is one of the eight titles in Japanese professional shogi. The word literally means "king's seat", i.e., "throne". The tournament started in 1953 as a knockout tournament with three games in the final match and was a non-title tournament up until 1982. The challenger for the title is determined through three preliminary rounds. The player that wins three games out of five in the championship match becomes the new Ōza title holder.