Marian Rees was an American television producer.

Her career began as an associate producer at Tandem Productions, where she worked on television specials starring Fred Astaire and Bobby Darin, and, later, worked on the pilots for All in the Family and Sanford and Son. She spent seventeen years at Tandem, eventually heading the company's new development division.

In 1981, she formed Marian Rees Associates, Inc., where she produced dozens of made for television films, including Love is Never Silent (with Cloris Leachman), and Miss Rose White (with Kyra Sedgwick), which won Primetime Emmy Awards for Outstanding Drama/Comedy Special and Outstanding Made for Television Movie, respectively. Two others, Foxfire (with Hume Cronyn and Jessica Tandy), and Decoration Day (with James Garner) earned Primetime Emmy Award nominations.

Rees served as Vice President of the Producer’s Guild of America in the mid-1990s. She was also a former Vice President of the Television Academy.

Rees died August 26, 2018, in Bainbridge Island, Washington. She was 90.