Aorlhac channels epic, medieval Occitan black metal from the Auvergne towns of Aurillac, Clermont-Ferrand, and Saint-Flour, drawing from local folklore and history with hurdy-gurdy woven into their acoustic-only instrumentation. Signed to Les Acteurs de l'Ombre Productions, their albums explore the Occitan heritage of south-central France through some of the most distinctive black metal the country has produced.

Aornos takes its name from the ancient fortress besieged by Alexander the Great and has besieged Miskolc's metal scene with black metal since 2015. Their sound reflects the darkness and severity that the Bükk Mountains surrounding their hometown inspire.

Aovum channels black metal from Helsinki since 2018, adding another distinctive voice to the Finnish capital's inexhaustible black metal community. Their embryonic name suggests a project focused on origins and genesis within darkness.

AoX fuses black and death metal from the Finnish underground since 2014, operating at the volatile intersection of extreme metal's two most aggressive subgenres. Their minimalist name matches the stripped-down intensity of their dual-genre assault.

Apa Simbetii merges black and death metal from Bucharest since 2013. Their Romanian name, referencing 'Saturday's water' — a folk tradition connected to commemorating the dead — grounds their extreme metal in Romanian folk belief.

Apanthropia merges black metal, doom metal, and gothic metal from the French underground since 2009, their misanthropic name reflecting a withdrawal from humanity into sonic darkness. Their triple-genre fusion creates a rich, atmospheric sound of deep emotional weight.

Apatheia practices black metal from Mielec in the Subcarpathian region since 2018. Named after the Stoic philosophical concept of freedom from emotional disturbance, they pursue a cold, detached strain of black metal from southeastern Poland.

Apati has practiced depressive black metal and post-rock from the Västerås and Fagersta area since 2016. Their Swedish name meaning 'apathy' drives compositions of profound emotional numbness from the Västmanland industrial belt.

Apea channels black metal from the western Finnish port city of Pori since 2022, contributing to the Satakunta region's growing extreme metal presence. Their Finnish name, meaning "sad" or "gloomy," perfectly captures the emotional tone of their output.