Hayley McFarland began acting in several local stage productions, including The Fiddler on the Roof and The Sound of Music. She made her television debut in 2006, when she took a two-episode role in Gilmore Girls. She soon chalked up guest roles in shows such as 24, ER and Pushing Daisies. In 2009, she took a recurring role in the Showtime series United States of Tara; later that year she joined the cast of Fox's Lie To Me, as the daughter of Tim Roth's Cal Lightman.
- An American Crime (2007)
- Winged Creatures (2008)
- Gilmore Girls (recurring, 2006)
- United States of Tara (recurring, 2009)
- Lie To me (regular, 2009-2011)