Layer Cake is a 2004 British crime film directed by Matthew Vaughn, in his directorial debut. The screenplay was adapted by J. J. Connolly from his 2000 novel of the same name. The film was produced by Adam Bohling, David Reid and Vaughn, with Stephen Marks as executive producer. The title refers to the social strata, especially in the British criminal underworld. The film's plot revolves around a London-based criminal, played by Daniel Craig, who works in the cocaine trade and wishes to leave the drug business. The film also features Tom Hardy, Michael Gambon, Colm Meaney, and Sienna Miller. Craig's character is unnamed in the film and is listed in the credits as "XXXX".

Matthew Allard de Vere Drummond, known professionally as Matthew Vaughn, is an English filmmaker. He has produced films including Lock, Stock and Two Smoking Barrels (1998) and Snatch (2000), and directed Layer Cake (2004), Stardust (2007), Kick-Ass (2010), X-Men: First Class (2011), and Argylle (2024). Vaughn also co-created the Kingsman comic book series and resulting franchise, directing, producing and co-writing the films Kingsman: The Secret Service (2014), Kingsman: The Golden Circle (2017), and The King's Man (2021).