Henri Decoin was a French film director and screenwriter, who directed more than 50 films between 1933 and 1964. He was also a swimmer who won the national title in 1911 and held the national record in the 500 m freestyle. He competed in the 400 m freestyle at the 1908 Summer Olympics and in the water polo tournament at the 1912 Summer Olympics.

The 1912 Summer Olympics in Stockholm saw the fourth water polo tournament at Olympics. All games took place in the newly built swimming stadium in Djurgårdsbrunnsviken from 7 to 16 July 1912. All medals were decided by using the Bergvall system.