John Derek (August 12, 1926 – May 22, 1998) was an American actor, director and photographer most famous for the women to whom he was married.
Born Derek Delevan Harris in Hollywood, California, he was first married to actress Pati Behrs (1922-2004), grand-niece of Leo Tolstoy and mother of his two children, Russell & Sean.
His matinee-idol good looks quickly got him supporting roles, most notably as Broderick Crawford's son in All the King's Men (1949), but he also enjoyed leads such as "Nick Romano" in Knock on Any Door (1949) opposite Humphrey Bogart (who told him, "You look great, but kid, that's not enough"), "Brock Mitchell" in Fury at Showdown, and as Robin Hood in Rogues of Sherwood Forest (1950) with Alan Hale.