Gosei
Gosei may refer to:
 , a Go competition in Japan, a "best of five" contest
 , term describing fifth-generation descendants of emigrants from Japan 
 , five questions for self-reflection in daily life, traditional at Japan's Naval Academy 
 , a character from the TV show Power Rangers Megaforce and Power Rangers Super Megaforce

See also 
 Goseibai Shikimoku, the legal code of the Kamakura shogunate in Japan, in 1232
 Gosei Sentai Dairanger, a Japanese tokusatsu television series, 1993-94