Atavus is a black and death metal band from Mainz, Germany, formed in 2022, combining the atmospheric hostility of black metal with death metal's guttural ferocity. The band's name, Latin for 'ancestor,' suggests a connection to primal, ancient themes within their extreme metal framework.

Atem fuses black and death metal from the northern port city of Kemi since 2017, drawing from the extreme cold of the Bothnian Bay. Their brief, breath-like name captures the gasping intensity of their dual-genre extremity.

Formed in 2011 in Tirana, Albania, Aten play old-school death metal with a straightforward brutality that keeps them rooted in the genre's classic conventions. Their 2014 debut album Horns of Evil established the band as a rare standard-bearer for extreme metal in the Albanian scene, and they have continued releasing material into the 2020s with Stars and Anvers.

aTeofania creates death, black, and doom metal from Taranto in Puglia since 2019. Named after the Greek concept of divine manifestation (theophany), they pursue revelation through the combined weight of three extreme metal subgenres.

Aterna is a melodic death and power metal band from Stuttgart, Germany, formed in 2014, featuring an international lineup including vocalist Ruben Picazo and vocalist Debora Blanco alongside Achokarlos Garcia on guitars, Daniel Molina Carabia on drums, and Luis Varo on bass. Their 2014 EP The Way to Live Again is the second part of a trilogy about two alchemists searching for the path to resurrection, blending conceptual storytelling with melodic extreme metal.

Athanasy creates death and doom metal from Lisbon since 2022. Their Greek-derived name meaning 'immortality' drives compositions that explore the weight of endless existence through crushing dual-genre heaviness.

AthanaTheos delivers death metal from Nantes since 2012, their Greek-theological name meaning "immortal god" adding a divine dimension to their mortal brutality. Over a decade of activity reflects sustained commitment within the Loire-Atlantique underground.

A death metal band from Brno documented on Metal Archives, Athanor represent the South Moravian underground extreme metal scene. Their Bandcamp URL resolves to a French metal act of the same name, and specific release details for the Czech band were not verifiable through available sources.

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