Michel Constantin (born Constantin Hokhloff; 13 July 1924 – 28 August 2003) was a French actor and professional volleyball player. He was the men’s national volleyball champion from 1954 to 1956, before making his film debut as a convict in the 1960 prison thriller The Hole. Thanks to his stature and striking features, he became a popular character actor in crime films, often playing thugs and gangsters. He appeared in several films alongside his friend Charles Bronson during the 1970's.

Born Constantin Hokhloff in Billancourt (near Paris), he was the son of a White Russian emigre father and his Polish wife. Hokhloff's father was a former officer in the Russian Army, of Kalmyk descent. He had met Hokhloff's mother while he was stationed in Warsaw, Congress Poland. After the Russian Civil War, the coupled moved to Paris, along with many other White emigres. During World War II, he worked at the Renault factories in Boulogne-Billancourt, where his family lived.