James Callis (born 4 June 1971) is a British actor. He is best known for playing Dr. Gaius Baltar in the re-imagined Battlestar Galactica miniseries and television series, and Bridget Jones' best friend in Bridget Jones's Diary and Bridget Jones: The Edge of Reason. He joined the cast of the TV Series Eureka, on Syfy, in 2010.

Filmography

• 2025Bridget Jones: Mad About the Boy — Tom
• Fallen — Edward Van Lockwood
• Castlevania: Nocturne — Alucard (voice)
• Slow Horses — Claude Whelan
• 2022The Bay House — Ryan Brooks
• 2020Break Even — Zalman
• Star Trek: Picard — Maurice Picard, The Psychiatrist / Maurice Picard
• 2019All Cock and No Bull! — Director, Writer, Executive Producer
• Blood & Treasure — Simon Hardwick
• Castlevania — Adrian Tepes / Alucard (voice)
• 2017House by the Lake — Scott, Producer
• 2017Once Upon a Date — Ed Holland
• 2016Blood Moon
• 2016Bridget Jones's Baby — Tom
• MacGyver — The Merchant / Clive
• 2016The Hollow — Vaughn Killinger
• 12 Monkeys — Athan Cole
• Gallipoli — Ellis Ashmead-Bartlett
• 2015Narcopolis — Todd Ambro
• Caper — Doc English
• The Musketeers — Émile Bonnaire
• 2013Austenland — Colonel Andrews
• Rick and Morty — Pat Gueterman / Courier Flaps (voice)
• Arrow — The Dodger
• Key & Peele — Shakespeare
• 201117th Precinct — John Bosson
• Portlandia — James Callis
• 2011Reuniting the Rubins — Danny Rubin
• FlashForward — Gabriel McDow
• 2009Merlin and the Book of Beasts — Merlin
• Merlin — Julius Borden
• 2007Battlestar Galactica: Razor — Dr. Gaius Baltar
• Eureka — Dr. Trevor Grant
• 2006One Night with the King — Haman, the Agagite
• 2005Dead Cool — Josh
• Numb3rs — Mason Duryea
• Battlestar Galactica — Gaius Baltar
• 2004Bridget Jones: The Edge of Reason — Tom
• Battlestar Galactica — Gaius Baltar
• Helen of Troy — King Menelaus of Sparta
• 2002Beginner's Luck — Writer
• As If — Sebastian
• 2001Bridget Jones's Diary — Tom
• 2001Victoria & Albert — Ernest
• Victoria & Albert
• Arabian Nights — Prince Ahmed
• CSI: Crime Scene Investigation — John Merchiston
• Jason and the Argonauts — Aspyrtes
• Relic Hunter — Raoul
• 1999Sex, Chips & Rock n' Roll
• Sex, Chips & Rock n' Roll — The Wolf
• A Dance to the Music of Time — Gwinnett
• Midsomer Murders — Toby DeQuetteville
• Murder Most Horrid — Mark
• The Ruth Rendell Mysteries — Guy Curran

Appearances as themselves (1)

• 2009Podfather — Self - Narrator (voice)