Acheronte practices black metal from San Benedetto del Tronto on the southern Marche coast since 2010, named after the River Acheron of Greek underworld mythology. Their infernal-river identity infuses a classically rooted darkness into their Adriatic-coast black metal.

Acherontia is a sludge and stoner metal band from L'Hospitalet de Llobregat near Barcelona, Spain, formed in 2012, featuring Rico on guitar and vocals, Rayo on bass and vocals, Jose on lead guitar, and Josep on drums. Their catalog spans from the 2012 debut Atropos through Kings of the World and Gods to the 2026 album Pink Shit Phantom Thunder, delivering vigorous metal characterized by heavy riffs recorded at La Atlantida Studios.

Acherontis creates raw black metal and ambient from Tarnobrzeg in the Subcarpathian region since 2012. Named after the River Acheron of Greek underworld mythology, their over-a-decade body of work channels infernal waters through lo-fi extremity.

Achilleus explores progressive heavy metal and rock from Kolsva in Västmanland since 2021. Named after the Greek hero with a distinctive spelling, they bring mythological heroism to progressive compositions from this small Swedish mill town.

Achren merges black and thrash metal from Glasgow since 2011, named after the queen of the enchantresses in Welsh mythology. Over a decade of Celtic-inspired extremity reflects deep roots in the Scottish metal underground.

A Belgian atmospheric post-black metal collective whose members deliberately remain anonymous to keep the focus on the music. Their debut EP Hollowlight spans two compositions across roughly fifteen minutes, alternating sharp, layered black metal passages with brief meditative interludes; the name is derived from Ancient Greek meaning "without tears."

Achsar has evolved from doom metal into melodic folk, death, and black metal from Levice in the Hron Valley since 2014. Their stylistic expansion over a decade mirrors a journey from monolithic heaviness to folk-enriched melodic extremity.

Formed in Ostend in spring 1999 by the Winkelmans brothers alongside Rik Aspeslagh and Kris Bollenberg, this melodic death metal band built a following in the Belgian underground before signing to Mausoleum Records. They were active for over a decade before disbanding in September 2012.

Acid Age blends progressive and thrash metal from Belfast since 2013, bringing over a decade of compositional ambition to Northern Ireland's metal scene. Their psychedelic-era name hints at the mind-expanding dimension of their thrash.