Best known as Jeor Mormont in Game of Thrones, Campbell in Braveheart, and Father Christmas in The Chronicles of Narnia.
Films
- The Kid Who Would Be KingMerlin2019
- The Legend of HerculesChiron2014
- The Last LegionHibernian2007
- The Chronicles of Narnia: The Lion, the Witch and the WardrobeFather Christmas2005
- TroyGlaucus2004
- BraveheartCampbell1995
- The Siege of Firebase GloriaSergeant1989
- HighlanderAngus MacLeod1986
- The BountyBligh’s Coxswain1984
- The Great St. Trinian’s Train RobberySchoolboy1965
TV shows
- Game of ThronesJeor Mormont2011–2012
- Highlander: The SeriesAngus MacLeod1993
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About James Cosmo
James Cosmo is a veteran Scottish actor with a career spanning over five decades. He is renowned for his commanding presence in epic historical dramas and fantasy series, often playing noble warriors and mentors. His most iconic roles include the tough but wise Commander Mormont and the brave Scottish warrior Campbell.
FAQs
What is James Cosmo’s most famous role?
He is widely recognised for playing Jeor Mormont, the Lord Commander of the Night’s Watch, in the HBO series Game of Thrones.
Which historical figure did James Cosmo portray in Braveheart?
He played Campbell, one of William Wallace’s loyal allies in Mel Gibson’s epic Braveheart.
How long has James Cosmo been acting?
He began his career in the mid-1960s, with his first credited film role in 1965, making his career span over 55 years.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026