Leslie Dilley (January 11, 1941 — May 20, 2025) was a Welsh art director and production designer. During his career from the 1970s to 2000s, he won the Academy Award for Best Art Direction twice for Star Wars (1977) and Raiders of the Lost Ark (1981). Dilley received additional Best Art Direction nominations for Alien (1979), The Empire Strikes Back (1980), and The Abyss (1989). Apart from art direction, Dilley was a production designer for The Exorcist III (1990), Casper (1995), and Son of the Mask (2005). In 1941, Dilley was born in Rhondda Valley, South Wales. Growing up, Dilley and his family moved to London and lived in Wembley Park. For his post-secondary education, Dilley studied architecture at Willesden Technical College. While working as an apprentice plasterer during college, Dilley was encouraged by a classmate to apply at Pinewood Studios. After Pinewood told him there were no open positions available, Dilley completed a five year plastering apprenticeship at the Associated British Picture Corporation.
2017The Galaxy Britain Built: The British Force Behind Star WarsMovieas Himself
2016Death, Be Not Proud: The Making of "The Exorcist III"Movieas Self
2009Beware the Moon: Remembering 'An American Werewolf in London'Movieas Self
2006Little ManMovieProduction Design
2005Son of the MaskMovieProduction Design
2003Cold Creek ManorMovieas Antique Dealer · Production Design
2001Black KnightMovieProduction Design
2000Pay It ForwardMovieas The Governor · Production Design
2000Men of HonorMovieProduction Design
1999Inspector GadgetMovieProduction Design
1999The Alien LegacyMovieas Self
1998Deep ImpactMovieas Waiter · Production Design
1997The PeacemakerMovieas New York Priest · Production Design
1997The Fifth ElementMovieThanks
1996DiaboliqueMovieProduction Design · Second Unit Director
1995How to Make an American QuiltMovieProduction Design · Second Unit Director
1995CasperMovieProduction Design
1994Monkey TroubleMovieProduction Design
1992The Distinguished GentlemanMovieProduction Design
1992Honey, I Blew Up the KidMovieProduction Design · Second Unit Director
1991What About Bob?MovieProduction Design
1991Guilty by SuspicionMovieProduction Design
1990The Exorcist IIIMovieProduction Design
1989The AbyssMovieProduction Design
1988Stars & BarsMovieProduction Design
1986Allan Quatermain and the Lost City of GoldMovieProduction Design
1986Invaders from MarsMovieProduction Design
1985LegendMovieSupervising Art Director
1983Never Say Never AgainMovieSupervising Art Director
1983EurekaMovieSupervising Art Director
1981An American Werewolf in LondonMovieArt Direction
1981Raiders of the Lost ArkMovieArt Direction
1980The Empire Strikes BackMovieArt Direction
1979AlienMovieArt Direction
1978SupermanMovieArt Direction
1977Star WarsMovieArt Direction
1974The Four MusketeersMovieArt Direction
1973The Three MusketeersMovieArt Direction
1973ScorpioMovieAssistant Art Director
1971The DevilsMovieAssistant Art Director
—New-GenTV showProduction Design · 1 episodes