Abutre (Portuguese for 'Vulture') are one of São Paulo's early heavy metal bands, formed in 1982 by the Giudice brothers and bassist Tomas Catafay. The band contributed two tracks — 'Quando o Fogo Começa a Arder' and 'Rock Rock Rock' — to the landmark SP Metal II compilation on Baratos Afins in 1985, placing them among the pioneers of São Paulo's underground metal circuit before disbanding in 1986 and reuniting for anniversary events in 2015 and 2016.

Abysmal Forest is a black metal band from Lavras, Minas Gerais, Brazil, with a history stretching back to 1995. The band released the demo 'Para sempre... reinarás' in 2002 and the CD/DVD 'Tributo aos Irmãos' in 2008, operating as an independent underground act within the Brazilian black metal tradition — not to be confused with the separate Abysmal Forest from Teresina.

Abyss Angel is a black/thrash metal band from General Roca, Río Negro, Argentina, formed in 2024. The band released the track "metamorphosis" in December 2024, establishing themselves as a new entry in Patagonia's extreme metal underground.

Abyss of Animas is a depressive black metal project from Buenos Aires, Argentina, active since 2020. The project has released two recordings, "Beautiful and Hateful" and "Memory Resembles Emptiness," both available through Bandcamp. Their sound sits within the introspective, lo-fi end of the Argentine black metal underground.

Abyssal was a thrash metal band from Oliveira, Minas Gerais, Brazil, active from the early 2000s until their split-up. An independent act from the interior of Minas Gerais, they played in the classic Brazilian thrash tradition before disbanding with minimal widely documented releases.

Abyssal Agony was a death metal band from Conselheiro Lafaiete, Minas Gerais, Brazil, active briefly in 2022 before splitting up. The band released material including the track "Reborn in Blasphemy" and the album "Torturing Soul," delivering raw, uncompromising death metal rooted in the underground traditions of the Minas Gerais scene.

Abyssal Forest is a pagan atmospheric black metal band from Palmas, Tocantins, Brazil, formed in 2017 and signed to Visionaire Records. Their debut album "Além da Grande Vasta Floresta" (Beyond the Great Vast Forest) weaves nature-worshipping themes and anti-monotheist philosophy into dense, melodic black metal, featuring founding members Skullkarved and Reinkaos alongside a full rhythm section assembled by 2019.

Abyssal Pain is a depressive black metal and ambient project from Angra dos Reis, Rio de Janeiro, Brazil, exploring themes of negativity, pessimism, and emotional dissolution. The project has released a substantial run of albums — including "Der Nagel im Sarg," "Frio Esterilizante," "Desvanecer," and "Catarse" — and contributed to the DSBM Brazil Vol. II compilation, situating itself firmly within the Brazilian DSBM underground.

Abyssall was a one-man melodic death metal project from Londrina, Paraná, Brazil, conceived and executed entirely by multi-instrumentalist Bruno Eduardo. Their 2022 debut EP "Victory Can Wait Forever" delivered five tracks wrestling with themes of technology, mass control, and guarded optimism, blending melodic death metal structure with introspective lyrical content before the project ceased activity.