Daitetsu Tadamitsu (大徹 忠晃, born 29 October 1956 as Tadamitsu Minami (南 忠晃)) is a former sumo wrestler from Ōno, Fukui, Japan. He made his professional debut in July 1971, and reached the top division in November, 1983. His highest rank was komusubi. He retired in September 1990, and has worked as a coach at both the original Nishonoseki stable and the new version of the stable, under the elder name Minatogawa.