Rebecca De Mornay (born Rebecca Jane Pearch; August 29, 1959) is an American actress and producer. Her breakthrough film role came in 1983, when she starred as Lana in Risky Business. She is also known for her portrayals of Sara in Runaway Train (1985), Thelma in The Trip to Bountiful (1985), Helen McCaffrey in Backdraft (1991), and Peyton Flanders in The Hand That Rocks the Cradle (1992).
Her other film credits include The Three Musketeers (1993), Never Talk to Strangers (1995), Identity (2003), Lords of Dogtown, Wedding Crashers (both 2005), and Mother's Day (2010). On television, she starred as Wendy Torrance in the miniseries adaptation of The Shining (1997), and as Dorothy Walker on Marvel's Jessica Jones (2015–19).