Aleks Paunovic (born June 29, 1969) is a Canadian actor. Some of his many roles include prospector Jim McAllister on the drama TV series Arctic Air, Julius on the fantasy horror drama series Van Helsing, imposing warrior Wygar Oak on the second season of Dirk Gently's Holistic Detective Agency, and Bojan "Boki" Boscovic on the dystopian thriller series Snowpiercer.

Paunovic is from Winnipeg, Manitoba, and "three generations of fighters" are in his family. His father is of Serbian descent, and his mother is of Croatian ancestry. His grandfather, father, and uncle were all champion boxers in Yugoslavia, and he was a champion boxer until a shoulder injury ended his career. Paunovic was in a rock band before he got an acting job at his first audition. He supports the Red Cross/Impact Anti-Bullying Campaign, as he had been bullied as a child.