Ancient Age is a black metal band from Atibaia, São Paulo, formed in 2023 and operating in the raw underground tradition. Their lyrical themes center on darkness, anti-Christianity, blasphemy, occultism, and medieval subjects, placing them squarely within the Brazilian black metal underground that has produced countless independent acts from the greater São Paulo region.

Ancient Gate is a one-person Argentine black metal project helmed by Ildrac, who performs all instruments and vocals. Citing Darkthrone, Judas Iscariot, and early Blut Aus Nord as reference points, the project debuted in 2019 with From the Shadow Lands and followed it in 2020 with Empire Beyond Dusk, alongside a split release with fellow Argentine act Wintaar titled Morbid Gates of Winter.

Ancient Monument is a black metal band from Governador Valadares, Minas Gerais — a city already known in Brazilian metal circles as the birthplace of gothic doom pioneers Silent Cry. Formed in 2020, the band operates in the underground black metal tradition and releases music independently 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.

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.

Andromalius is a black metal band from Gurupi, Tocantins, Brazil, formed in 2019, taking their name from the goetic demon of the 72 spirits of Solomon. Operating in the deep underground of Brazil's interior, the band carries forward the raw, occult-driven black metal tradition that has flourished in the country's less-documented regional scenes.

András was a black metal band from Santa Mariana, Paraná, Brazil, active from 2012 until their split-up. Operating within the Brazilian underground black metal scene, the band pursued a raw and orthodox approach to the genre rooted in the traditions of South American black metal extremism.

Andurá is a black metal band from Campos dos Goytacazes, Rio de Janeiro state, Brazil, formed in 2020. The band adds to the growing cluster of Rio de Janeiro state underground black metal acts, pursuing the harsh, atmospheric extremity that characterizes the Brazilian black metal underground.

Anfauglith is a folk/pagan black metal band from Olinda, Pernambuco, whose name is drawn from J.R.R. Tolkien's Silmarillion — the Sindarin word for "Suffocating Dust" referencing the burning of the plain of Ard-Galen. Formed in 2010, the band draws on Moonsorrow and Thyrfing for their atmospheric framework while weaving in Nordic mythology and medieval paganism, releasing their EP "The Devastation in Ard-Galen" in 2019.