Altenstadt Air Base (German: Heeresflugplatz Altenstadt, ICAO: ETHA) is located approximately 1.3 kilometres (0.81 mi) northeast of the Upper Bavarian municipality of Altenstadt, Bavaria, Germany. The air base is operated by the German Army Aviation Corps.

During World War II the airfield was used as a training centre for Anti-aircraft warfare.

Following the foundation of the German Armed Forces (Bundeswehr) in 1955 a training school for airborne troops was established at Altenstadt Air Base in 1956. In June 1993, the base was officially named Franz Josef Strauss Barracks after the former prime minister of Bavaria, who had served on the air base during World War II as a National Socialist Leadership Officer (Nationalsozialistischer Führungsoffizier). Since 1997 the school has been twinned with the French Army's École des troupes aéroportées (ETAP) in Pau.

Altenstadt Air Base is home of the German Army's School for Airborne Troops as well as a Bundeswehr Sports Promotion Section. Also stationed at the air base are parts of the Central Medical Services. Approximately 720 military personnel are employed at the air base.

In October 2011 the German Federal Ministry of Defence announced a reorganisation/reduction of the German Armed Forces. As a consequence, the School for Airborne Troops will be disbanded and the Bundeswehr Sports Promotion Section will be relocated to Oldenburg. The Central Medical Services will be expanded into a regional medical centre. Additionally, a battalion of aspirant non-commissioned officers will be based at Altenstadt Air Base. However, after the implementation of these cuts and relocations, the number of military personnel based at Altenstadt Air Base will be reduced by almost 75 per cent to 190.

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