Julia Charlotte L. Davis is an English actress, comedian, director and writer. A nine-time BAFTA TV Award nominee, she won Best Comedy Writing for Hunderby in 2013 and the 2018 British Academy Television Award for Best Scripted Comedy for Sally4Ever. She has also received two RTS Awards and three British Comedy Awards. In addition to acting in her own works, she has appeared in a variety of other British television comedies, most notably portraying Dawn Sutcliffe in Gavin & Stacey (2007–2009, 2019, 2024). Her film roles include Love Actually (2003), Cemetery Junction (2010), Four Lions (2010), and Phantom Thread (2017).

Julia Davis was born in Guildford, Surrey on August 25, 1966 Her mother was a secretary, and her father a civil servant. She grew up in Guildford, Surrey, before moving at the age of 14 to Bath in Somerset. She was raised in the Church of England.