An airbase' (sometimes referred to correctly as an airfield military airport, or Royal Air Force Station or Air Force Station) is a military airfield that provides basing and support of military aircraft.

They are different from civilian airports in that they do not provide for large volume of passenger transits, and cargo handling is not processed by the customs and immigration facilities. Some military air forces combine use of civilian airports with the hosting of military units.

However, military aircraft usually use substantially different support equipment, and require facilities sufficiently isolated from civilian operations due to issues of aviation safety involving the weapon ordnance they use.