Wakashima Gonshirō, Japanese sumo wrestler, the 21st Yokozuna (died 1943)

Wakashima Gonshirō was a Japanese professional sumo wrestler from Ichikawa, Chiba Prefecture. He was the sport's 21st yokozuna and the first official yokozuna from the Osaka Sumo Association.

Makuuchi (幕内), or makunouchi (幕の内), is the top division of the six divisions of professional sumo. Its size is fixed at 42 wrestlers (rikishi), ordered into five ranks according to their ability as defined by their performance in previous tournaments.