Pneumatic cannon may refer to:
Dynamite gun, any of a class of artillery pieces that use compressed air to propel an explosive projectile FN 303, a semi-automatic less-lethal riot gun Holman Projector, a naval anti-aircraft weapon M61 Vulcan, a hydraulically, electrically, or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon M134 Minigun, a six-barrel rotary machine gun with a high rate of fire Potato cannon, a pipe-based cannon that uses air pressure, or combustion of a flammable gas to fire projectiles, usually potatoes
See also Air cannon (disambiguation) Air gun (disambiguation) Pneumatic weapon, a weapon that fires a projectile by means of air pressure