Tochiōzan Yūichirō, Japanese sumo wrestler

Tochiōzan Yūichirō (Japanese: 栃煌山 雄一郎, born March 9, 1987 as Yūichirō Kageyama (影山 雄一郎)) is a Japanese former professional sumo wrestler from Aki, Kōchi. He made his professional debut in January 2005 and reached the top makuuchi division in March 2007, retiring in July 2020. At one point he was regarded as one of the most promising Japanese rikishi during a period of domination by foreign born wrestlers. His highest rank was sekiwake. His best performance came in May 2012 when he tied with Kyokutenhō after fifteen days but was beaten in a play-off. He earned six special prizes for his achievements in tournaments and six gold stars for defeating yokozuna. He made twenty-five appearances in the san'yaku ranks.