Otto Rauth (born January 22, 1914) was an Italian hockey player. He was the best player on the Italian National Team at the 1939 World Championship, scoring eight goals in seven games. Rauth scored four goals in seven games at the 1948 Winter Olympics. He was born and raised in Switzerland, but also had Italian citizenship. Rauth played club hockey for HC Davos and was the playing-coach for EHC Basel in Switzerland for several years. He spent the 1938-39 season in Italy with HC Diavoli Rossoneri Milano.