William B. Davis

William B. Davis is a Canadian actor best known as the Cigarette Smoking Man in The X-Files, a role he played across 43 episodes and the 1998 film.

His other work includes Mayor William Tate in Smallville and the older Alec Sadler in Continuum. He founded the William Davis Centre for Actors Study in Vancouver and published the memoir Where There's Smoke ... The Musings of a Cigarette Smoking Man in 2011.

Born in Toronto in 1938, he trained at the London Academy of Music and Dramatic Art and served as an assistant director at the National Theatre under Laurence Olivier.