Louis Joseph Vairo (born February 25, 1945 in Brooklyn, New York) is an American ice hockey coach. He is the former assistant coach for the New Jersey Devils in the National Hockey League, and has also been the head coach for the American national men's ice hockey team multiple times. At the 2010 ceremony for the International Ice Hockey Federation Hall of Fame on May 21, Vairo was presented with the Paul Loicq Award for his "outstanding contributions to international hockey".