Martha Campbell Plimpton is an American film and stage actress, voice actress, singer, and model. The daughter of actor Keith Carradine, she is well-known for her roles in films, such as Stef Steinbrenner in The Goonies, Julie Buckman in Parenthood, the title character of the 1991 film Samantha, and Jan in Beautiful Girls. She also played Virginia Chance in the Fox sitcom Raising Hope.
For Disney, she played Eileen O'Neal in the ABC sitcom The Real O'Neals and voiced Yelana in the 2019 Disney animated sequel Frozen II. She also voiced Briana in Vampirina and the Duchess of Dazzle in Doc McStuffins.