Gregory S. Mark (born July 7, 1967) is a former American football defensive end and linebacker in the National Football League. He was drafted by the New York Giants in the third round of the 1990 NFL Draft. He played college football at Miami. Mark played in the NFL for the Philadelphia Eagles and Miami Dolphins. Mark was a defensive line coach for the Hurricanes from 1996 to 2005. Born in Cherry Hill, New Jersey, Mark grew up in Merchantville and played football at Pennsauken High School.