William Belleau
- Birth Date
- 4/15/1982
- Birth Place
- Williams Lake, British Columbia, Canada
- Known For
- Acting
William Belleau (born April 15, 1982) is a Secwépemc Canadian actor known for his roles in films such as Killers in the Flower Moon (2023) and Eddington (2025), as well as the drama television series Frontier.
