Michael James Davidson (born 20 July 1963 in Whangārei) is a former freestyle swimmer from New Zealand, who won the bronze medal in the men's 400 metres freestyle at the 1986 Commonwealth Games. He represented his native country at 1984 Summer Olympics. He served as head coach of High Tide Aquatics for five years and was announced as an assistant coach at the University of Alabama in June 2012.
A distance ace and team captain for the University of Alabama during the late 1980s, Davidson earned All-American honors in the mile and helped lead Alabama to the 1987 Southeastern Conference team title under the direction of legendary UA coach Don Gambril. Before joining the Tide, he swam for New Zealand at the 1984 Olympics in Los Angeles where he posted top-16 finishes in the 400 and 1500-metre freestyles. He also earned a bronze medal at the 1986 Commonwealth Games. He was inducted into New Zealand's Northland Sports Legends Hall of Fame in 2011.