Thomas Owen Marsh (born December 27, 1965) is an American former Major League Baseball player.

He was drafted by Philadelphia in the 16th round of the 1988 MLB draft and made his Major League Baseball debut in 1992 for the Philadelphia Phillies.

Marsh only played for parts of three seasons in MLB baseball — all with the Phillies — in 1992, 1994, and 1995.

Due to the seriousness of the matter, ESPNs Baseball Tonight devoted much of its program that evening to Marsh's injury.

This biographical article relating to an American baseball outfielder born in the 1960s is a stub.