Mark Robert Conover (born May 28, 1960 in Contra Costa County, California) is an American long distance runner and coach. He is most famous for his unexpected strategic victory at the 1988 United States Olympic Trials marathon, qualifying him for the 1988 Summer Olympics in Seoul, South Korea, where he was a member of the U.S. Team. The winning 2:12:26 at the Olympic trials was his personal best.