RCAF Detachment Gananoque was a relief landing field for the Royal Air Force's No. 31 Service Flying Training School (SFTS) located at Kingston during the Second World War. The airfield was located north of Gananoque, Ontario, Canada. Gananoque consisted of a typical British Commonwealth Air Training Plan triangle-shaped runway pattern, one hangar, and a control tower. The station opened in 1940 and closed in 1945. Today, the former station is the Gananoque Airport.