Denis Dyack (born July 24, 1966) is the CEO of Apocalypse Studios, a Canadian-based video game developer.
He is also the former president of video game developer Silicon Knights, and is a video game designer, writer, director and producer.
Dyack directed the production of Blood Omen: Legacy of Kain and Eternal Darkness: Sanity's Requiem, and is currently directing the production of Deadhaus Sonata.
Denis was inducted into the Canadian Gaming Hall of Fame by the Canadian Game Development Talent Awards in November 2011.