Kaiho Ryoji (born April 17, 1973 as Ryoji Kumagaya) is a former sumo wrestler from Aomori, Japan.
His highest rank was komusubi.
An amateur champion at Nihon University, he entered professional sumo in 1996.
He was one of the lightest sekitori wrestlers in recent years.
He won two special prizes for Technique.
He retired from active competition in 2010 and became a coach, but in April 2011 he was asked to resign from the Japan Sumo Association after being found guilty of match-fixing.