Commonwealth Air Training Plan Museum, Military museum and national historic site at Brandon Municipal Airport, Manitoba, Canada.

The Commonwealth Air Training Plan Museum is an aviation museum at a Canadian military airport displaying aircraft and equipment from World War II. The collection includes navigation instruments, bombardier tools, and ground crew vehicles from that era.

The facility was part of a British Commonwealth training program during World War II that trained pilots and crews from multiple countries. This program played an essential role in preparing air personnel for the war effort.

The museum's name and purpose point to the British Commonwealth Air Training Plan, which trained airmen from across the Commonwealth at Canadian air stations during World War II. In 2014 the museum unveiled a memorial to Canadian airmen killed in that war. Its exhibits cover navigation, pilot, bombardier, ground crew and transport equipment, and a gift shop is on site.

The museum is located at an active airport, so it is most easily reached by car. Visiting conditions change with the seasons, so planning ahead is worthwhile.

The museum preserves several restored aircraft including models like the Avro Anson and Bristol Bolingbroke that were used in the training program. It also displays rare vehicles from the 1940s that document life at the air base.