"Jack" O'Callahan (born July 24, 1957 in Charlestown, Massachusetts) is a retired American professional ice hockey player who played 390 NHL regular season games between 1982 and 1989 for the Chicago Blackhawks and New Jersey Devils.
Before turning professional, he was a member of the 1980 Winter Olympics United States national team that upset the Soviet Union in the "Miracle on Ice" game.