Ad Baculum is a black metal project from Salvador, Bahia, led by Lord Hades — formerly the vocalist of legendary Brazilian cult act Mystifier — who handles all instruments except drums. The band's debut Blackness Doctrine (2011) drew directly from the raw black/death vein Hades helped pioneer in Mystifier, while the third album Opening the Abyss (2016), released on Brazilian Ritual Records, shifted toward slower, doom-saturated tempos with howling, cavernous vocals and cover art taken from Gustave Doré's illustrations of Dante's Inferno.

Ad Extremum is a black metal band from Brasília, Brazil, formed in 2013 and signed to Nox Bellum Prod. Their music explores themes of Satanism, occultism, and suicide, rooted in the raw, atmospheric tradition of Brazilian black metal.

Ad Inferno is a Brazilian black metal project that emerged in 2022, featuring members drawn from Campo Grande, Curitiba, and Rio de Janeiro. Their debut full-length "A Senda do Abismo (Spiritus Pestilens)", recorded and released in late 2022, presents a cold, underground black metal aesthetic.

Adaga — Portuguese for "dagger" — is a black metal band from São Paulo, Brazil, built around the duo of Anderson Ribeiro and Fabrizzio Hanoi. Their 2019 EP "Spawning Black Seeds" channels themes of darkness, occultism, and chaos through a stripped-down, underground black metal attack.

Adrammelech is a black metal horde from Joinville, Santa Catarina, Brazil, formed in 2018 and oriented around themes of primordial gnosis, war, and Hyperborean mysticism. The five-piece — operating under pseudonyms including Masterwolf, Daswolf, Hades, and Terror — released a self-titled demo in 2018 on Battlefront Distro.

Adumbrall is a black/death metal solo project from Euclides da Cunha, Bahia, Brazil, formed in 2020 by Athayde Neto, who also plays in the band Wiseblood. A one-man operation, Neto handles all instruments, vocals, and lyrics, channeling themes of nature, philosophy, enlightenment, horror, and lust across releases including "Through Passion, Through Pain, Through Blood" and "In a Blaze of Order."

Aeri Satur is a black metal and dark ambient project from Sorocaba, São Paulo, Brazil, active since 2023 under the creative alias Sagarana. The project blends raw and depressive black metal with dungeon synth and experimental atmospheric elements, incorporating literary references to Tolkien, Guimarães Rosa, and Florbela Espanca into its Portuguese-inflected songwriting. Their 2024 album "Vreedas" exemplifies their oneiric sound, weaving extended compositions through cosmological and philosophical themes.

Agalarieth are a black metal band from Valdivia, Chile, who released the demo "Dark Path Begins" in 2011, recorded at Black King studio in Valdivia and issued as a pro-CDR limited to 300 copies. The four-track demo was also distributed on cassette through labels including Anti Cosmic Productions and Depressive Illusions Records.

Agaurez is a black metal band from Belo Horizonte, Brazil, originally formed in 1998 and reconstituted in 2013 after a lengthy hiatus. Their debut "Un-Virtue-Vitae" (2002) on Demise Records represented traditional keyboard-driven black metal, but their second album "The Five Sigils" — released on the prestigious Brazilian label Cogumelo Records — marked a heavier evolution incorporating death and thrash metal elements. Thematically rooted in rational anti-Christian ideology, Nietzsche, and occultism, the band is one of Belo Horizonte's more enduring extreme metal acts.