Born in Montreal, Guillaume Langlois lives and works in Saguenay. After studying arts and political science, he made his mark as an editor before establishing himself as a documentary filmmaker. Today, he combines this role with that of teacher-researcher at the École supérieure en Art et technologie des médias. In 2024, he co-directed the film Atiku, Gardien du territoire and in 2026 presented his first feature-length documentary, Là où tout se rassemble.