Hayden Lesley Panettiere (; born August 21, 1989) is an American actress, model, and singer. She is best known for her lead roles as Claire Bennet on the NBC superhero series Heroes (2006–2010) and Juliette Barnes in the ABC/CMT musical drama series Nashville (2012–2018), the latter of which earned her two nominations for the Golden Globe Award for Best Supporting Actress – Series, Miniseries or Television Film. She also appears in the meta-slasher horror franchise Scream, portraying tomboy film geek Kirby Reed.

A native of Palisades, New York, she first appeared on-screen in a commercial in 1990 at only 11 months old. However, her full-time acting career did not begin until 1994 when playing Sarah Roberts on the long-running ABC soap opera series One Life to Live from that year until 1997. She then went on to play Lizzie Spaulding on one of CBS's own soaps, Guiding Light from 1996 until 2000. For her work on Pixar film A Bug's Life (1998), she was nominated for a Young Artist Award and a Grammy Award, making her the 5th youngest artist ever to be nominated for a Grammy. Panettiere has also starred in the Disney football drama film Remember the Titans (2000), the final season of the Fox legal comedy-drama series Ally McBeal (2002), the comedy-drama film Raising Helen (2004), the Disney Channel original patriotic film Tiger Cruise (2004), the horse racing comedy film Racing Stripes (2005), the figure skating drama film Ice Princess (2005), the romantic comedy film I Love You, Beth Cooper (2009), the true crime drama film Amanda Knox: Murder on Trial in Italy (2011), and the drama film Custody (2016). She also voiced the characters of Kairi and Xion in the video game series Kingdom Hearts (2002–2017) and Samantha "Sam" Giddings in the video game Until Dawn (2015).