Michael Lawrence Marsh (born August 4, 1967) is a retired American sprinter, the 1992 Olympic champion in the 200 m. Marsh was born in Los Angeles, and attended high school at Hawthorne High School in Hawthorne, California where he was overshadowed by Henry Thomas, who he joined on numerous championship relays.

That was the second of what became a trend, a succession of eight early season outstanding 100 m marks set by Marsh at the Mt.

[3] At the 1992 US Olympic Trials, Marsh disappointingly finished fourth in the 100 m, not enough for individual qualification, but sufficient to make the relay team.

His 1994 season went without a win, but he did lead off the Santa Monica Track Club's 4 × 200 m relay at the Mt.

SAC Relays when the team of Marsh, Leroy Burrell, Floyd Heard and Carl Lewis set a world record in the event that would stand until 2014.

In 1996, Marsh managed to qualify for all three sprint events at the 1996 Summer Olympics in Atlanta, and he reached the final of all three.

He again qualified for the 100 m final at the 1997 World Championships, where he placed last due to a foot injury that required immediate surgery.