Mark Rydell (March 23, 1929 — August 13, 2026) was an American actor, film director and producer. He has directed many Academy Award-nominated films including The Fox (1967), The Reivers (1969), Cinderella Liberty (1973), The Rose (1979), The River (1984) and For the Boys (1991). He was nominated for an Academy Award for Best Director for On Golden Pond (1981).

Rydell's initial training was in music. As a youth, he wanted to be a conductor. He began his career as an actor and first became known for his role as Walt Johnson on The Edge of Night and as Jeff Baker on As the World Turns, which he played from 1956 to 1962. When he would not sign a long-term contract to remain on ATWT the producers had his character die in a car crash. He won plaudits for his role of violent Jewish mob kingpin Marty Augustine in Robert Altman's The Long Goodbye (1973). His most recent significant film role was in Woody Allen's Hollywood Ending (2002).