Mark Jeffrey Reynolds (born November 2, 1955) is an American Star class sailor and Olympic champion.

He has sailed Stars since age four, training with his father James Reynolds who was the 1971 World Champion (as crew for Dennis Conner).

[2] Afterwards he formed a new partnership with crewman Magnus Liljedahl, and they went on to win a string of championships, culminating with a gold medal at the 2000 Olympics.

[4] As a sophomore, Mark was All American on the San Diego State University sailing team in 1974.

Mark led the team to a 2nd place finish both in 1974 and 1975 in the North American Dinghy Championships.