rikishi

A , or, more colloquially, , is a sumo wrestler. Although used to define all wrestlers participating in sumo wrestling matches, the term is more commonly used to refer to professional wrestlers, employed by the Japan Sumo Association, who participate in professional sumo tournaments (called ) in Japan, the only country where sumo is practiced professionally.

Professional follow traditions dating back to the Edo period, and therefore follow a number of codes and customs in their daily lives that distinguish them from other martial artists. Their life as professionals revolves around the observance of traditional rules that apply both to their life in the community and to the way they dress, the latter rules evolving according to the rank a wrestler has reached during his career.