Ancestor is a death metal band from São Paulo, Brazil, formed in the mid-1990s and active in the city's dense underground metal circuit. The band has released material including "My Condolences" and "Greatest Shits", delivering fast, aggressive death metal rooted in the classic São Paulo extreme metal tradition.

Ancestral Cântico is a black metal sextet from Salvador, Bahia, whose sound blends occult ritual atmosphere with shamanic repetition and hypnotic riffing drawn from forebears like Mercyful Fate, Venom, Bathory, and Rotting Christ. Their thematic territory spans ancestral spirituality, witchcraft, hermeticism, and anti-colonial consciousness, setting them apart within Brazil's underground. They released their debut full-length Ancestrais Dizeres Profanos in 2015, followed by Cânticos Lunares (2018) and the sprawling Hermético Caminho dos Saberes Ocultos in 2024 via Sangue Underground Records.

Ancestral Terror is a death/thrash metal band from Catalão, Goiás, rooted in the old-school extreme metal tradition with lyrical themes of religious corruption, war, and iconoclasm. The band issued their debut recording Hallways of Pain and later appeared on the 2016 split Bacchanals of Horror alongside Rio de Janeiro act Orgy of Flies through Warhemic Productions. They have been on hold since around 2013.

Ancesttral were a groove/thrash metal band from São Paulo active from 2003 until their split-up, drawing on classic US thrash influences — Metallica, Pantera, Slayer, Anthrax — while incorporating modern groove and alternative metal textures. Their discography includes the debut full-length The Famous Unknown (2007) and Web of Lies (2016), the latter a well-reviewed eleven-track album that showcased a heavier, more polished direction.

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 Land were a pagan black/death metal band from Embu das Artes, on the outskirts of São Paulo, who blended black and death metal with symphonic elements and themes of freedom, paganism, nature, and anti-Christianity. Their Bandcamp catalogue includes the releases In My Solitude…, In the Name of the Cross…, The Symphony of War, and Destroys the Lies before the band dissolved.

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.

Ancient Ritual is a pagan metal project from Caxias do Sul, Rio Grande do Sul, built around a deliberately raw, 90s-style black metal aesthetic with an ambient vocal timbre as its sonic signature. Their Bandcamp releases include Moonlit Rites of the Damned, The Dark Age, Ars Goetia, and Congressus Cum Daemone, all exploring themes of battles, southern lands, and pagan philosophy.