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Erwin Kostner (born 7 April 1958) is an Italian ice hockey coach and former player. He competed in the men's tournament at the 1984 Winter Olympics. As a player Kostner won four times the Scudetto: three times with HC Gardena (1975-1976, 1979-1980 and 1980-1981) and one time with HC Bolzano (1989-1990). After retirement he becomes a coach in Italy (with Ritten Sport, HC Gherdëina, SHC Fassa, the jr. team of Val Pusteria and the Under-18 and Under-20 national teams) and Switzerland ( and HC Thurgau).