A black and funeral doom metal band from São Paulo active since 2004, whose name translates as "Without Faith." The project — centered on N. (Marcos Felinto Santos) on guitar, synth, violin, and vocals — weaves funeral doom heaviness with psychedelic and post-rock textures, releasing a self-titled album in 2012 and "O sol fulmina a terra" in 2016, and eventually breaking their no-live-show policy to perform at São Paulo's Let There Be Doom festival in 2013.

A thrash and death metal band from Rio de Janeiro whose members come from the city's and Niterói's underground metal scene. Aiming to push beyond conventional song structures while keeping the music grounded rather than indulgently technical, the band released the EP "Ravishers of Innocence and Purity" to positive reception within Brazil's extreme metal community.

Absoluto Poder was a death/thrash metal band from São Paulo, Brazil, formed in 2013 by members Mike Dorsal and Rafael Tortuguita, drawing influence from Sodom, Dorsal Atlântica, and old-school Sepultura. The band blended the aggression of Brazilian thrash with death metal heaviness in the vein of early Death and Autopsy, releasing a demo titled 'When Your Nightmares Come True' in 2015 and working toward a full-length before splitting up.

Abstract was a heavy/thrash metal band from Anápolis, Goiás, Brazil, active during the 2000s within the state's growing underground metal scene centered around the annual Anápolis Metal festival. The band played straightforward heavy and thrash metal rooted in the classic Brazilian tradition before splitting up.

Abstracted is a progressive death metal band from São Paulo, Brazil, founded in 2013, who began in technical thrash territory before evolving into a dense, multi-layered sound drawing comparisons to Between the Buried and Me, Persefone, and Cynic. Signed to M-Theory Audio, they released the acclaimed debut full-length 'Atma Conflux' in 2022, a 64-minute concept record balancing technical aggression with esoteric themes, followed by 'Hiraeth' in February 2026, featuring guest appearances from Chaney Crabb of Entheos.

Absurdium is a death metal band from Americana, São Paulo, Brazil, with roots going back to 2002 through predecessor projects including Healer and Divine Putrefaction. The band released their album 'Man-Made Horrors Beyond Comprehension' in January 2025, a 10-track, 32-minute record channeling old-school death metal aggression with socially critical lyrical themes.

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.