Lea Katherine Thompson (born May 31, 1961) is an American actress, singer, dancer, and director.

She is best known for her roles as Lorraine Baines-McFly in the Back to the Future film trilogy (1985–1990), Beverly Switzler in Howard the Duck (1986), and Amanda Jones in Some Kind of Wonderful (1987). Other films for which she is known include All the Right Moves (1983), Red Dawn (1984), Dennis the Menace (1993), and The Beverly Hillbillies (1993). In the 1990s, she played the title character in the sitcom Caroline in the City. From 2011 to 2017, she co-starred as Kathryn Kennish in the ABC Family-turned-Freeform series Switched at Birth.