Monica Keena is an American actress. She made her film debut in While You Were Sleeping (1995), and a lead role as Lilliana "Lilli" Hoffman in Snow White: A Tale of Terror (1997).

While You Were Sleeping is a 1995 American romantic comedy film directed by Jon Turteltaub and written by Daniel G. Sullivan and Fredric Lebow. It stars Sandra Bullock as Lucy, a Chicago Transit Authority token collector, and Bill Pullman as Jack, the brother of a man whose life she saves, along with Peter Gallagher as Peter, the man who is saved, Peter Boyle and Glynis Johns as members of Peter's family, and Jack Warden as a longtime family friend and neighbor.