Canadian Forces Base St. Hubert was a Canadian Forces Base in the city of Saint-Hubert, Quebec. The base began as a civilian airfield in the 1920s and was later also used by RCAF auxiliary (reserve) squadrons, beginning in the mid-1930s. It became a fully-fledged RCAF station early in World War II, being extensively used for training as part of the British Commonwealth Air Training Plan. After the war, it grew into one of the most important air bases in Canada, and remained so for decades.