Ronald Herbert Mason (January 14, 1940 – June 13, 2016) was a Canadian ice hockey player, head coach, and university executive. A head coach of various American universities, most notably Michigan State University (MSU), he was the most successful coach in NCAA ice hockey history between 1993-2012 with 924 wins, until Jerry York (Boston College) become the new winningest coach with his 925th career win on December 29, 2012. Mason was athletic director at MSU from 2002-08. He then served as senior advisor for the USHL Muskegon Lumberjacks. On December 2, 2013, Mason was inducted into the U.S Hockey Hall of Fame.