The Montana Air National Guard (MT ANG) is the aerial militia of the State of Montana, United States of America. Along with the Montana Army National Guard it is an element of the Montana National Guard.

Each state in the United States has a senior military officer, as the state adjutant general, who is the de facto commander of a state's military forces, including the National Guard residing within the state, the state's naval militia, and any state defense forces. This officer is known as TAG, and is subordinated to the chief executive. They do not have authority over police forces, only military forces.