Rebecca De Mornay (born 29 August 1962) is an American actress, born in Santa Rosa, California,USA, the daughter of Wally George. De Mornay grew up in France and went to college in the United Kingdom. She studied acting at the Lee Strasberg-Institute in New York (which also at one time included veterans Mickey Rourke, Robert De Niro and Christopher Walken). Her film debut came with a small part in Francis Ford Coppola's One from the Heart (1982), which was followed by the very successful Risky Business (1983) with Tom Cruise. That film propelled her into a short-lived period of super-stardom, which deteriorated slightly after she began taking lesser roles.
De Mornay's most successful film to date (2005) was The Hand That Rocks the Cradle (1992). In 2004, she guest starred as attorney Hannah Rose for the final few episodes of The Practice and the following year had a brief role alongside Owen Wilson and Vince Vaughn in Wedding Crashers.
In the early 1990s De Mornay was linked romantically to Leonard Cohen. She is credited as a producer and arranger on his critically acclaimed album The Future (1992).
She owns the odd distinction of having had a character in a television series been named for her: in Seinfeld episode 8.21, entitled "The Muffin Tops," and episode 9.17, entitled "The Bookstore", actress Sonya Eddy played a thrift store clerk named Rebecca De Mornay.