Apostate Viaticum merges death metal with an ecclesiastical conceptual framework from Dublin, active since 2018. Their name — combining religious renunciation with the last rites given to the dying — signals a preoccupation with spiritual finality.

Apostema is a death and black metal band from Saarland, Germany, formed in 2026, representing one of the newest entries into the German extreme metal scene. The band channels the combined ferocity of death and black metal from the small western German state bordering France.

Aposthate has evolved from black and death metal into brutal death metal from Caltanissetta in central Sicily since 2010. Their heretical name drives extremity that has grown more punishing with each phase, deep in the Sicilian interior.

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.

Apotheoses is a death metal band from Freiburg im Breisgau in the Black Forest region of Germany, formed in 2012, delivering extreme metal from one of southwestern Germany's most picturesque cities. The band's name, meaning the elevation of someone to divine status, suggests grandiose thematic ambitions within their death metal framework.

Appalling Testimony delivers brutal death metal from Kyiv since 2019. Their horrifying-witness name drives compositions of court-testimony-level brutality from the Ukrainian capital.

Apparatus is an experimental blackened death metal band from Copenhagen, Denmark, formed in 2014, whose extensive catalog includes the Cthulhu trilogy, Demonomicon, Yonder Yawns the Universe, and HM-2. The band draws heavily on Lovecraftian cosmic horror themes, building a thematic universe around the eldritch mythology across their releases.

Aprosopy is a death metal band from Dresden, Germany, formed in 2013, whose name references the medical condition of facial absence, fitting the genre's fascination with bodily horror and medical pathology. The band contributes to Dresden's active extreme metal underground.

Aquilon merges death metal, industrial metal, and melodic death metal from the Drôme town of Montélimar since 2016. Named after the Roman god of the north wind, their sound carries a corresponding chill despite their Provençal origins.