Cognomen セツ (Setsu 
, セツ ) , globally, is quite a rare surname. The surname セツ is habitual in Japan, where it is quite a rare surname, Hungary, where it is a very rare surname, and France, where it is an extremely rare surname. In absolute terms, this name is the most popular in Japan, China, and the United States. Predominantly, セツ is the forename as well as the last name.