The GSh23 Autocannon Sound is a sound of a twin-barreled 23 mm autocannon developed in the Soviet Union, primarily for military aircraft use. It entered service in 1965, replacing the earlier Nudelman-Rikhter NR-23 cannon.

The GSh-23 works on the Gast Gun principle developed by German engineer Karl Gast of the Vorwerk company in 1916. It is a twin-barreled weapon in which the firing action of one barrel operates the mechanism of the other. It provides a much faster rate of fire for lower mechanical wear than a single-barrel weapon.

Late-model MiG-21 fighters, all variants of the MiG-23, the SOKO J-22 Orao, the HAL Tejas and IAR 93 have this cannon. Likewise the tail turrets of the Tupolev Tu-22M bomber and some late-model Tu-95s. In that application, it had the unusual ability to fire infrared flares and chaff rounds. Therefore it function as both a weapon and a dispenser of anti-missile countermeasures.

The GSh23 Autocannon sound consists of the firing start sound – [START] file, [LOOP] audio file 10 seconds long and the ending file – [END], which should be played at the end of the shooting. The Aircraft Weapons SFX Library includes 51 audio files.