James Callis is an English actor best known for his role as Dr. Gaius Baltar in the reimagined sci-fi television series Battlestar Galactica, from 2004-2009. He also starred in the Battlestar Galactica mini-series in 2003.
London-born Callis studied English and Related Literature at the University of York. After graduating in 1993, he gained a place at the renowned London Academy of Music & Dramatic Arts.
He graduated from LAMDA in 1996 and has since appeared in various West End stage productions, as well as in film and on TV and radio.
Callis made his West End debut in Old Wicked Songs alongside Bob Hoskins in 1996, earning the London Critics' Circle's Jack Tinker Award for Most Promising Newcomer.
He appeared at the Almeida Theatre in George Bernard Shaw's The Doctor's Dilemma in 1998, and at the Soho Theatre in London last year in Peter Ackerman's Things You Shouldn't Say Past Midnight.
He broke into television in 1996 with a guest role on the British series Murder Most Horrid and with a recurring role in the ensemble of the long-running U.K. drama Soldier Soldier.
Callis went on to a number of telefilms and miniseries, including The Scarlet Pimpernel (1999) and Jason and the Argonauts (2000).
He played Bridget's pal Tom in the hit movie Bridget Jones's Diary (2001) and its sequel Bridget Jones: The Edge of Reason (2004).
He co-wrote and co-directed the film Beginner's Luck (2001), in which he starred opposite Julie Delpy. He was Menelaus in USA Network’s mini-series Helen of Troy, and in 2006 played Haman, the Amelekite in the feature film One Night With the King, with Omar Sharif and Peter O’Toole.
In 2007 he reprised his role as Gaius Baltar in the made-for-TV two-hour movie Battlestar Galactica: Razor.
Callis has two sisters. He lives in London, with his wife Neha, and their sons Joshua and Sacha, who were born in 2003 and 2005, respectively.
Apart from acting, directing, and writing, he writes music, and plays piano and guitar.