Marnie Mosiman is an American actress-singer, best known for the films What Women Want, Princess Mononoke, Hero, Burl's, The Lost World, and Without Warning.

Television credits include Dr. Tracy Peters on CBS’ The Bold and the Beautiful, with guest appearances on FOX’s Ally McBeal, NBC’s Frasier, CBS’ Picket Fences, CBS’ Star Trek: The Next Generation, NBC’s Hill Street Blues, CBS’ Dallas, CBS’ Knots Landing, and FOX’s Beverly Hills, 90210.

Theatre credits include Mrs. Hildebrand in Street Scene (Alex Theatre); Madame Jordain in The Bourgeois Gentleman (Ravinia Festival); Mariana in Measure for Measure (Mark Taper Forum); Mrs. Nordstrom in A Little Night Music (James A. Doolittle Theatre); Lady Croom in Arcadia, Myra in Hay Fever, Jane in Benefactors, and Ana/Dona Ana in Man and Superman (South Coast Repertory); Olga Kromow in The Merry Widow (Dorothy Chandler Pavilion); and Joan of Arc in Jean D’arc Au Bucher (Aspen Music Festival).