Shimotori Norio (born March 18, 1978) is a former sumo wrestler from Arai, Niigata Prefecture, Japan. A former amateur champion, he made his professional debut in 2000 and first reached the top division in 2002, although due to injuries he had trouble maintaining that position. He earned one special prize, for Fighting Spirit. His highest rank was komusubi. He was forced to retire in April 2011 after an investigation by the Japan Sumo Association found him guilty of match-fixing.