William J. Cameron "Cam" Kirby QC (January 12, 1909 – June 27, 2003) was an Alberta politician, leader of the Conservative Party, barrister, Queen's Counsel, and a Justice of the Court of Queen's Bench. He taught Latin, English and mathematics to the children of ranching families and became highschool principal at Okotoks, Alberta in 1935. After three years, he left to study law in Vancouver. Kirby resigned as party leader in January 1960 and was appointed to the Supreme Court of Alberta (Trial Division), later the Court of Queen's Bench of Alberta.