Ancient Tower is an epic doom metal project from São Paulo, created in 2017 by Mateus Henrique, who also works under the banners Black Sun Void and Gateways to Oblivion. The project explores slow, heavy, atmospheric doom with releases including the album Darkened Horizons and a series of demos, all self-released through Bandcamp.

Ancientblood is a black metal band from Ilha do Governador, a district of Rio de Janeiro, with roots tracing back to an earlier project that later evolved into the raw black metal act Vinterthron. The name is a deliberate reference to the Scandinavian black metal origins the band draws from, and the project has produced raw rehearsal and pre-production material released through Ashen Productions.

Ancienterror is a death/thrash metal band from Santiago, Chile, formed in 2002 from the ashes of Missing Sequence, and has remained active in the city's underground scene ever since. The band released the EP "Arguments for Aggression" in 2007 and has built its lyrical identity around anti-religious, anti-globalization, and anti-capitalist themes.

Ancillae is a death/thrash metal band from Carazinho, Rio Grande do Sul, Brazil, formed in 2024. A recent entry into the Brazilian extreme metal underground, they combine the brutality of death metal with the aggression and riff-driven attack of thrash.

Andenwölfe is a one-man raw black metal project from Venezuela, formed in 2023 and devoted to themes of solitude, isolation, and inner darkness. The project released the debut EP Reminiscing on Tragedy in October 2023, described as a journey through desolation and self-reliance.

Andkristur is a raw black metal solo project from Neuquén, Argentina, dealing in themes of occultism, anti-Christianity, and esoteric darkness. The project operates in an almost entirely instrumental mode, releasing a succession of demos and full-lengths including Triumphant Darkness (Demo III), The War of Evil (Demo II), and the full-length Mors Sinistri Cruci. The Latin-titled releases reflect the project's embrace of classical anti-Christian black metal aesthetics.

Andragonia is a progressive metal band from São Paulo, Brazil, formed in 2007, whose debut album "Secrets in the Mirror" (2010) was elected Best Brazilian Progressive Metal Album of that year and featured a video aired on Brazilian MTV. The band blends complex song structures and powerful guitar work across three studio albums — "Secrets in the Mirror" (2010), "Memories" (2012), and "Oxygen" (2016) — placing them among the more prominent acts in Brazil's progressive metal scene.

Andralls is a São Paulo thrash metal band formed in 1998 (active as a recording act from 2000), whose name references the historic Andraus building fire that killed 16 people in the city in 1972. Known for a self-described "fasthrash" style that pushes the tempo to near-death metal extremes, they have released albums including "Massacre, Corruption, Destruction" (2000), "Inner Trauma" (2005), "Breakneck" (2012), and "Bleeding for Thrash" (2019), the latter receiving a 9/10 from Metal Temple for its ferocious riff work and relentless aggression.

Andre Matos (14 September 1971 – 8 June 2019) was one of Brazil's most celebrated heavy and power metal vocalists, known for his tenor voice spanning roughly 3.5 octaves and his operatic delivery. He rose to international fame as the founding vocalist of Angra — whose debut "Angels Cry" (1993) broke through in Japan and Europe — and later fronted Shaman before dedicating his final years to a solo career that launched in earnest around 2012; following his death from a heart attack in 2019, São Paulo's mayor declared June 8 as the city's Heavy Metal Day in his honor.