Nicole Evangeline Lilly (born August 3, 1979) is a Canadian actress and children's book author, who is best known for her role as Kate Austen in the ABC adventure drama series Lost from 2004 to 2010, and as Tauriel in The Hobbit trilogy.

She plays Hope Van Dyne in the 2015 Marvel Studios film, Ant-Man and will reprise her role in the upcoming 2018 Marvel Studios film Ant-Man and the Wasp. She also played Bailey Tallet in the 2011 DreamWorks/Touchstone Pictures film, Real Steel and an uncredited role as a Police Officer in The Lizzie McGuire Movie.