Alchemy is a heavy and doom metal band from Rio de Janeiro, formed in 2020 and currently on hold. Drawing on traditional doom's slow tempos and heavy riffing blended with classic heavy metal songwriting, the band reflects influences from the genre's founding acts while operating independently within Rio de Janeiro's underground metal scene.

Alluring is a solo atmospheric black and doom metal project from Temuco, Chile, active since 2020. The project released its debut demo In the Cold Lips of Eros in 2020, followed by a remastered edition, the EP A Seductive Death, and a 2024 promo titled Kill Me, Alluring Diva. The project's own description centers on themes of "eroticism and agony," placing it within a gothic doom black metal aesthetic uncommon in southern Chile's underground scene.

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.

Ankt is a black/doom metal duo from São Paulo, Brazil, whose slow-burning approach fuses the abrasive texture of black metal with the crushing weight of doom. The project released its self-titled debut album in 2017 after a four-year gestation period, comprising eleven tracks that established their murky, oppressive sound.

Antiklan is a post-doom and sludge metal trio from Natal, Rio Grande do Norte, Brazil, formed in 2022. The band — vocalist Julia Gusso, guitarist and bassist Flávio França, and drummer Max Barros — released their debut album 'Under Wetiko (Hymns from beneath the Veil)' in 2022, a five-track record recorded at Studio Black Hole in Natal and mixed in São Paulo. Their heavy, socially charged sound blends sludge and doom with an explicitly DIY, anti-authoritarian ethos, earning comparisons to punk-infused sludge.

Anátema was a black/doom metal band from Campina Grande, Paraíba, Brazil, formed in 2021. The band combined the desolate atmosphere of black metal with the slow, crushing weight of doom metal, drawing from a region of Brazil with a small but growing extreme metal underground before splitting up.

Arabesco is a solo project from São Paulo, Brazil, formed in 2015 by multi-instrumentalist André Oliveira. The project blends acoustic elements with sludge and doom metal, creating a sparse and heavy sound rooted in the São Paulo underground scene.

Aridonia formed in San Salvador de Jujuy in Argentina's extreme northwest, with a lineup of Fernando Echenique on guitar and vocals, Benjamin Yecora on guitar, Tomas Longombardo on bass, and Matias Paiva on drums. The band released their debut EP, "EP1", in 2017, followed by their self-titled full-length in 2020, a seven-track record praised for bridging stoner metal, doom, and progressive rock influences. Comparisons to Tool, Kyuss, and Baroness have been noted by reviewers, reflecting the band's blend of heavy riffing and atmospheric song structures.

Arrastado is a stoner and doom metal project from Brasília, Brazil, formed in 2018 and built around home recordings under the name that translates roughly to "dragged" in Portuguese — apt for the slow, crushing tempos the band favors. Their releases include the album Isso Também Será Esquecido (This Too Shall Be Forgotten) and Hinos do Esquecimento, both available on Bandcamp and consistent with the heavy, fuzz-driven doom aesthetic. The project's DIY approach and introspective Portuguese titles reflect the broader character of Brazil's independent stoner-doom underground.