Tatsuki Fuji (藤井 達樹, Fujii Tatsuki), (born July 6, 1970) is a Japanese wrestler for Dragon Gate, best known by his ring name Don Fujii. He was one-half of the inaugural Open the Owarai Twin Gate Champions and is also a former two-time Open the Twin Gate Champions with Masaaki Mochizuki. He was previously in the Crazy MAX and Blood Generation stables.