Penelope Mitchell (born 24 July 1991 is an Australian actress, best known for playing the roles of Letha Godfrey in the American horror television series Hemlock Grove, and Liv Parker in The Vampire Diaries.
She began acting a few years before she landed her role on Hemlock Grove, appearing on shows including Toon Time, an Australian kids show, the ABC (Australia) show Next Stop Hollywood, which followed six Australian actors (including Penelope) who move to Hollywood to audition for pilots, and an episode of Australian police drama Rush.
In the United States, Mitchell is known for her roles on the television series The Vampire Diaries and Hemlock Grove. as well as the films Hellboy and Zipper. She was also recently cast as Renée Picard in the television series Star Trek: Picard.