Apollow is a German death and doom metal band formed in 2016, combining the crushing slowness of doom metal with death metal's guttural heaviness. The band occupies the intersection of the two genres where ponderous riffs and overwhelming weight create an oppressive sonic atmosphere.

Apoptose has been delivering death-doom metal from the Alsatian town of Haguenau since 2000, their cell-death name reflecting the programmed destruction at the core of their sound. Over two decades make them one of the Bas-Rhin's most enduring extreme metal acts.

Apotelesma crafts doom and death metal from Utrecht Province since 2017. Named after the astrological concept of cosmic influence on earthly events, they create compositions that channel celestial weight into terrestrial heaviness.

Arachna Signorum creates black and funeral doom metal from Pyatigorsk in the North Caucasus since 2009. Named after 'spider of signs,' their nearly two-decade body of work weaves dark web from this famous spa city at the foot of Mount Beshtau.

Arachnotaur channels doom, drone, and sludge metal from the UK underground since 2022, their spider-bull hybrid name evoking a monstrous heaviness. The project delivers some of the most crushingly slow and heavy music in the British underground.

Arakk is a funeral doom and post-metal band from Copenhagen, Denmark, formed in 2014, whose release Under Sovnen, meaning 'under sleep' in Danish, reflects the glacial, trance-like quality of their crushing funeral doom sound. The band merges the genre's agonizingly slow tempos with post-metal's textural expansiveness.

Arbour crafts gothic doom and death metal from Ålesund on Norway's Art Nouveau coast since 2014. Their garden-shelter name evokes the sheltered, verdant spaces where beauty and decay coexist — much like their music.

Arcana Coelestia blends black metal with funeral doom from Cagliari since 2007, named after Swedenborg's theological work 'Heavenly Mysteries.' Their Sardinian project brings almost two decades of cosmic, glacially paced extreme metal informed by esoteric spirituality.

Arcane Voidsplitter is the solo atmospheric drone and doom metal project of Stijn Van Cauter, also known for Until Death Overtakes Me and Beyond Black Void, based in Erembodegem, Belgium. The project is built around a vast cosmic concept universe, with each release — including "Voice of the Stars" (2019), "Cosmic Mind" (2020), "Cold Stars" (2022), and "ARC-V" (2023) — mapping a different corner of its fictional interstellar narrative.