An accidental explosion at a Turkish Army ammunition store in Afyon, western Turkey kills 25 soldiers and wounds four others.

The 2012 Afyonkarahisar arsenal explosion occurred at 21:15 local time on 5 September 2012 in Afyonkarahisar, Turkey. According to Turkish Armed Forces, 25 servicemen died, four other soldiers and three civilians were injured by the accident.

Afyonkarahisar is a major city in western Turkey. It is the administrative centre of Afyonkarahisar Province and Afyonkarahisar District. Its population is 328.319 (2024). Afyon is in the mountainous countryside inland from the Aegean coast, 250 km (155 mi) south-west of Ankara along the Akarçay River. In Turkey, Afyonkarahisar stands out as a capital city of hot springs and spas, an important junction of railway, highway and air traffic in West-Turkey, and the place where independence was won. In addition, Afyonkarahisar is one of Turkey's leading provinces in agriculture, globally renowned for its marble and is the world's largest producer of pharmaceutical opium. In antiquity, the city was called Akroinon and it is the site of Afyonkarahisar Castle, built around 1350 BC.