Heather Laurie Holden (born December 17, 1969) is an American-Canadian actress, producer, model, and human rights activist. She is best known for portraying Marita Covarrubias in The X-Files (1996–2002) and Andrea in AMC's The Walking Dead (2010–2013). She has also had recurring roles in acclaimed television series such as The Shield (2008), The Americans (2017–2018), and The Boys (2022). In film, she played Cybil Bennett in Silent Hill (2006) and Amanda Dumfries in The Mist (2007).