Dinah Manoff is an American stage, film, and television actress and television director, best known for her film roles as Marty Maraschino in Grease, Libby Tucker in I Ought to Be in Pictures, Maggie Peterson in Child’s Play, and Karen in Ordinary People. Other film credits include Bart Got a Room, Zigs, The Amati Girls, Staying Together, Bloodhounds of Broadway, Backfire, Everybody Rides the Carousel, and Welcome Home, Roxy Carmichael.

Television credits include Evelyn Rayburn on FOX’s State of Grace, Carol Weston on NBC’s Empty Nest, and Elaine Lefkowitz-Dallas on ABC’s Soap.

Broadway credits include her Tony Award-winning debut role as Libby in I Ought to Be in Pictures (Eugene O’Neill Theatre) and Young Ellie Greenwich in Leader of the Pack (Ambassador Theatre).