Léonhard Quaglia (born 1896 - date of death unknown) was a French hockey player. He played for the Chamonix Hockey Club in the 1920's. Quaglia played for France in the 1920, 1924, and the 1928 Olympics. As well he competed in speed-skating in 1924 and 1928. He played in the World Championships in 1920, 1931, and 1935.