Louis Joseph Vairo (born February 25, 1945) is an American retired ice hockey coach and administrator. He served as head coach of the United States men's junior team at five IIHF World U20 Championships, and the United States men's team at four Ice Hockey World Championships and the 1984 Winter Olympics. He was an advance scout for the United States gold medal team at the 1980 Winter Olympics, and was an assistant coach on the United States silver medal team at the 2002 Winter Olympics. He has also served as head coach of the Netherlands men's team and the Italy men's team at the Ice Hockey World Championships. Vairo has coached in professional hockey leagues in Europe, won a Serie A championship with HC Milano Saima, and served as an assistant coach for the New Jersey Devils. In junior ic