Rebecca De Mornay, born Rebecca J. Pearch, is an American film and television actress. Her breakout film role came in 1983, when she played Lana in Risky Business.

De Mornay was born in Santa Rosa, California. Her father was the conservative radio and television commentator Wally George (born George Walter Pearch). De Mornay was raised by her mother, Julie (née Eagar), and stepfather, Richard De Mornay. She grew up in France and went to the progressive Summerhill School 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).

De Mornay's film debut was a small part in Francis Ford Coppola's One from the Heart(1982). Soon thereafter came her star-making role as a hooker who seduces a high school student played by Tom Cruise in Risky Business.

In 1986, she appeared with Starship's Mickey Thomas in the music video for the song Sara. The song reached #1 on the Billboard Hot 100 chart on March 15, 1986.

One of De Mornay's most commercially successful films came in the thriller The Hand That Rocks the Cradle (1992). She also appeared in Ron Howard's Backdraft, in a remake of Roger Vadim's provocative And God Created Woman and in the starring role as a defense lawyer in Sidney Lumet's murder drama Guilty as Sin.

In 2004, the actress guest-starred as attorney Hannah Rose for the final few episodes of The Practice and the following year had a brief role alongside Owen Wilsonand Vince Vaughn in Wedding Crashers.

In June 2007, she appeared in the HBO series John From Cincinnati in a starring role as matriarch of a troubled Imperial Beach, California surfing family, and as grandmother/guardian to a teen surfer on the brink of greatness.