- Jean-Pierre Marielle - Jacques Saunière
- Marie-Françoise Audollent - Sister Sandrine
- Rita Davies - Elegant Woman at Rosslyn
- Francesco Carnelutti - Perfect
- Seth Gabel - Michael
- Shane Zaza - Youth on Bus
- Andy Clark - Docent
- Fausto Maria Sciarappa - Youngest Church Official
- Joe Grossi - Old Church Official
- Denis Podalydès - Flight Controller
- Harry Taylor - British Police Captain
- Clive Carter - Biggin Hill Police Captain
- Garance Mazureck - Sophie at 13 Years
- Daisy Doidge-Hill - Sophie at 8 Years
- Lilli-Ella Kelleher - Sophie at 3 Years
- Crisian Emanuel - Sophie's Mother
- Charlotte Graham - Mary Magdelene
- Xavier de Guillebon - Junkie
- Tonio Descanvelle - Bank Guard
- David Bark-Jones - Hawker Pilot
- Seretta Wilson - American Woman
- Eglantine Rembauville-Nicolle - Student
- Dan Tondowski - Student
- Aewia Huillet - Student
- Roland John-Leopoldie - Student
- David Saracino - DCPJ Agent
- Lionel Guy-Bremond - Officer Ledoux
- Yves Aubert - Louvre Computer Cop
- Rachael Black - Policewoman
- Dez Drummond - London Police
- Mark Roper - London Police
- Brock Little - American Embassy Cop
- Matthew Butler-Hart - Westminster Cop
- Roland Menou - DCPJ Technician
- Hugh Mitchell - Young Silas
- Tina Maskell - Silas' Mother
- Peter Pedrero - Silas' Father
- Sam Mancuso - Pope
- Andre Lillis - Pope
- Mario Vernazza - Young Constantine
- Agathe Natanson - Ritual Priestress
- Daz Parker - Peasant Mother
- Andy Robb - Peasant Father
- Tom Barker - Peasant Boy
- Maggie McEwan - Peasant Girl
- Michael Bertenshaw - Priest
- Sarah Wildor - Priestess
- David Bertrand - French Newscaster
- Dan Brown - Book signing party guest (uncredited)
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Ding Sheng
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