Ewen Bremner (born January 23, 1972) is a Scottish character actor. His roles have included Julien in Julien Donkey-Boy and Daniel "Spud" Murphy in Trainspotting and its 2017 sequel T2 Trainspotting.

Bremner was born in Edinburgh, the son of two art teachers. He attended Davidson's Mains Primary School and Portobello High School. He originally wanted to be a circus clown, but was offered a chance at screen acting by television director Richard D. Brooks. One of his first notable roles was as a Glasgow schoolboy in Charles Gormley's Heavenly Pursuits (1986). He also played the lead in the BBC Scotland feature-length adaptation of the William McIlvanney short story "Dreaming" (1990).