Gregory F. Comella (born July 29, 1975 in Wellesley, Massachusetts) is a former professional American football fullback in the National Football League for the New York Giants, the Tennessee Titans, the Houston Texans and the Tampa Bay Buccaneers. He was the starting full back for the New York Giants in Super Bowl XXXV against the Baltimore Ravens. He attended Xaverian Brothers High School and later starred at Stanford University. He studied for an MBA at Harvard Business School.