Henri Decoin (18 March 1890 – 4 July 1969) 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.

During World War I Decoin served as a pilot. After that he worked as a sports journalist for L'Auto, L'Intransigeant and Paris-Soir. In 1926 he published his first book, influenced by Dadaism, the experimental and prize-winning Quinze Combats (Fifteen Rounds), in which a boxing match is seen subjectively by a boxer, and in 1933 directed his first film, Les requins du pétrole (The Oil Sharks).