Mark Edward Fusco (born March 12, 1961) is an American former professional ice hockey player who appeared in 80 National Hockey League (NHL) regular season games for the Hartford Whalers in 1984–85. As an amateur, Fusco won the Hobey Baker Award in 1983 while playing for the Harvard Crimson men's ice hockey team. That season he set the school record for points by a Harvard defenseman in one season, which stood until it was surpassed by Adam Fox in 2019.
Fusco played hockey for the United States at the 1984 Winter Olympics. Fusco also represented the U.S. in the 1984 Canada Cup and 1985 Ice Hockey World Championship tournaments before retiring from professional hockey. Fusco was inducted into the United States Hockey Hall of Fame in 2002, and was named a recipient of the 2009 NCAA Silver Anniversary Award.
After attending Harvard Business School, Fusco became a successful entrepreneur in new software development businesses. From 2005 to 2013, Fusco was Chief Executive Officer and President of Aspen Technology Inc.
His younger brother Scott is also a hockey player of note.