William "Willie" Dunn (August 14, 1942 – August 5, 2013) was a Canadian film maker, folk musician, playwright and politician. Born in Montreal, he is of mixed Mi'kmaq and Scottish/Irish background. Dunn often highlighted aboriginal issues in his work.

Born in Montreal, Quebec, Canada, Dunn was a singer and acoustic guitarist. He wrote a song entitled "The Ballad of Crowfoot" and directed a ten-minute National Film Board of Canada (NFB) film of the same name in 1968. Both the song and video are about inhumane and unjust colonial treatment of aboriginal Canadians, as well as their taking charge of their destiny and becoming politically active. One of the first NFB films directed by an Aboriginal filmmaker, the film received several awards including a Gold Hugo for best short film at the 1969 Chicago International Film Festival.