Ryoji Aikawa (相川 亮二, Aikawa Ryōji, born July 11, 1976 in Ichikawa, Chiba, Japan) is a former professional Japanese baseball player. He plays catcher for the Yomiuri Giants. Aikawa was a member of the Japanese national baseball team at the 2006 World Baseball Classic and 2013 World Baseball Classic. He also won the Bronze medal at the 2004 Olympic Games. His younger brother, Juri, is an actor and model.