Marian Mercer was an American actress and singer, best known as Nancy Beebe on ABC’s It's a Living and Wanda Jeeter/Wanda Rittenhouse on TAT’s Mary Hartman, Mary Hartman. Other television credits include Ursula Dietz on NBC’s Empty Nest, Eve Leighton on NBC’s St. Elsewhere, Ursula on ABC’s Benson, and Kay Fox on CBS’ The Sandy Duncan Show.

Film credits include Out on a Limb, Nine to Five, Sammy Stops the World, John and Mary, and Oh, God! Book II.

Broadway credits include her debut as Maidy/Emma in Greenwillow and Mrs. Thurman/Others in New Faces of 1962 (Alvin Theatre); Deidre in Bosoms and Neglect (Longacre Theatre); Evie/Others in Stop the World—I Want to Get Off (New York State Theatre); Myra Arundelin Hay Fever (Helen Hayes Theatre); Polly in A Place for Polly (Ethel Barrymore Theatre); and Marge MacDougall in Promises, Promises (Shubert Theatre).