Michael Lee Bruner (born July 23, 1956) is an American former competition swimmer, 1976 Montreal two-time Olympic champion, and former world record-holder in two events.

Born in Omaha, Nebraska on July 23, 1956, Bruner grew up in Stockton, California, and started swimming around age seven.

By the summer of 1973, before his Senior year in High School, Bruner also swam for the Pacific Athletic Club, placing third in the 1500-meter freestyle at the Los Angeles Invitational Swim meet that August, with a time of 16:17.20, only seven seconds behind Rick DeMont's first place world record time of 16:05.17.

[7] Bruner attended and swam for Stanford University, under Hall of Fame Head Coach James Gaughran, beginning in the Fall of 1974, and graduated in June 1979 with a degree in Mechanical Engineering.

[10][11] In one of his first college meets at the Stanford Invitational Championships on November 29, 1974, he broke the pool and school record for the 500-yard freestyle event with a time of 4:32.2.

[3] At the 1976 Montreal Olympics he won a gold medal in the 4×200-meter freestyle relay swimming with Bruce Furniss, John Naber, and Jim Montgomery setting a World record of 7:23.22.