The Texas Air National Guard (TX ANG) is the aerial militia of the State of Texas, United States of America. It is, along with the Texas Army National Guard, an element of the Texas National Guard. No element of the Texas Air National Guard is under United States Air Force command. They are under the jurisdiction of the Governor of Texas through the office of the Texas Adjutant General unless they are federalized by order of the President of the United States. The Texas Air National Guard is headquartered at Camp Mabry, Austin, and its chief of staff is Brigadier General Matthew Barker.

Under the "Total Force" concept, Texas Air National Guard units are considered to be Air Reserve Components (ARC) of the United States Air Force (USAF). Texas ANG units are trained and equipped by the Air Force and are operationally gained by a Major Command of the USAF if federalized. In addition, the Texas Air National Guard forces are assigned to Air Expeditionary Forces and are subject to deployment tasking orders along with their active duty and Air Force Reserve counterparts in their assigned cycle deployment window.

Along with their federal reserve obligations, as state militia units the elements of the Texas ANG are subject to being activated by order of the Governor to provide protection of life and property, and preserve peace, order and public safety. State missions include disaster relief in times of earthquakes, hurricanes, floods and forest fires, search and rescue, protection of vital public services, and support to civil defense.