Hellenic Air Force Museum, Military aviation museum in Acharnes, Greece

The Hellenic Air Force Museum occupies Dekelia Air Base in Acharnes, north of Athens. Most of the collection is housed in the "Leros" hangar, a structure the Italians built on Leros between the wars as a seaplane base and later moved to Tatou. Aircraft on display include a Bristol Blenheim Mk IV F, a Supermarine Spitfire Mk IXc, a Curtiss Helldiver SB2C-5, a Lockheed F-104G and a Northrop F-5.

A museum office was set up in 1986, and in July 1992 the Hellenic Air Force Museum became an official unit equal in rank to a combat wing, based at Dekelia (Tatoi). In 1996 a Bristol Blenheim Mk IV F shot down before the Battle of Crete was raised from the seabed off Rethymno, and on 3 October 2003 a Junkers Ju 52 was lifted from waters near Leros. Its main collection is housed in the "Leros" hangar, built by the Italians between the wars as a seaplane base.

The main collection is housed in the "Leros" hangar, a structure the Italians built on Leros between the wars and used as a seaplane base until World War II; after the war two of these hangars were dismantled and moved to Tatoi and Elefsina. The museum is the first institution in Greece to rebuild historic aircraft, and school groups may visit on weekdays with prior approval.

The museum is located within an active military air base, so visitors need to check access requirements and opening hours before arriving. It is advisable to visit the official website for current visiting conditions and to understand any special procedures for entry.

The museum's recovery team conducts missions to retrieve rare aircraft from underwater locations, salvaging pieces that would otherwise remain lost. These recovered planes become valuable additions to the collection and tell stories of aviation history that might have disappeared.