Madeline Zima (born September 16, 1985) is an American actress. She is known for portraying Grace Sheffield on the CBS sitcom The Nanny (1993–1999), Mia Lewis on the Showtime comedy drama series Californication(2007–2011), and Gretchen Berg on the NBC series Heroes (2009–2010).
She played the role of Grace Sheffield on the television show The Nanny throughout all of its six seasons. From 2007 to 2011. Zima played Mia Lewis, on the series Californication. From 2009 to 2010, Zima joined the cast of Heroes as Gretchen Berg, Claire Bennet's quirky bisexual roommate and tentative love interest.
Zima has also become known for her work in films such as The Hand That Rocks the Cradle, A Cinderella Story, Dimples, Looking for Sunday, Once in a Very Blue Moon, Pretty Little Devils and The Collector.
Zima appeared as a guest star on several TV shows including Law & Order, JAG, and Touched by an Angel. She also guest starred in an episode of The Vampire Diaries, and in two episodes of the 2017 Twin Peaks. In 2012, she was cast in a co-starring role in the ABC drama pilot Gilded Lillys.