- the U.S. department consisting of practically all military aviation forces, established July 26, 1947.
- a similar department in any military organization.
- (formerly) the largest unit in the U.S. Army Air Forces.
- a unit of U.S. Air Force command between an air division and an air command.
- the military unit of a nation charged with carrying out military operations in the air.
- Royal Air Force.
- the branch of a nation's armed services primarily responsible for air warfare
- (as modifier)
- a formation in the US and certain other air forces larger than an air division but smaller than an air command
