Joseph Leo Mankiewicz (/ˈmæŋkəwɪts/ MANG-kə-wits; February 11, 1909 – February 5, 1993) was an American filmmaker. A four-time Academy Award winner, he is best known for his witty and literate dialogue and his preference for voice-over narration and narrative flashbacks. Also known as an actor's director, Mankiewicz directed several prominent actors, including Bette Davis, Humphrey Bogart and Elizabeth Taylor, to several of their memorable onscreen performances.

Born in Wilkes-Barre, Pennsylvania, Mankiewicz studied at Columbia University and graduated in 1928. He moved overseas to Europe, where he worked as a foreign correspondent for the Chicago Tribune and translated German intertitles into English for UFA. On the advice of his screenwriter brother Herman, Mankiewicz moved back to the United States, and was hired by Paramount Pictures as a dialogue writer. He then became a screenwriter, writing for numerous films starring Jack Oakie. He next moved to Metro-Goldwyn-Mayer (MGM), where he served as a producer for several films, including The Philadelphia Story (1940) and Woman of the Year (1942). Mankiewicz left MGM after a dispute with Louis B. Mayer.