Lieutenant General William Keir "Bill" Carr, CMM, DFC, OStJ, CD (March 19, 1923 – October 14, 2020) was a Canadian Air Force officer.

At age 18, he attended Mount Allison University and obtained his BA, during which time he sold typewriters to earn extra money for school.

542 Squadron at RAF Benson flying the Spitfire PR Mk XI, one of which he flew to Malta when he was transferred to No.

During one mission he suffered minor injury when his Spitfire lost control over Perugia, Italy.

He became Deputy Chief of the Defence Staff in 1973, during which post "he set out to undo the “handiwork” of Paul Hellyer by unscrambling air force formations and functions and consolidating them as Air Command.