James Cosmos (born 24 May 1948) is a British actor, known for his film roles in Highlander, Braveheart, the film adaptation of The Chronicles of Narnia: The Lion, the Witch and the Wardrobe, Trainspotting, The Last Legion, Troy, and 2081.

He is also a staple of British television, with credits in hundreds of television shows, Cosmo made a name for himself playing Scottish "tough guy" characters.