Anarchus is a death/thrash metal band from Belo Horizonte, Minas Gerais, Brazil, active since the late 1980s in the city's vibrant extreme metal underground. The band recorded demos including "Total Hate" (1988) and "Melody's of Destruction" (1989), and released the compilation "Increasing the Hate" in 1997 marking a decade of activity. Their raw, aggressive style reflects the first wave of Brazilian extreme metal emanating from Minas Gerais.

Anarkhon is a death metal band from Guarulhos, São Paulo, founded in 1999, who survived the tragic loss of original vocalist Péricles Hooper to a hit-and-run accident and continued with guitarist Aron Romero — also of black/thrash act Power From Hell — taking over vocal duties. Their early work, including albums "Obesidade Mórbida" (2007) and "Welcome to the Gore Show" (2013), delivered brutal, gore-drenched death metal, before the band evolved toward a more atmospheric and cerebral sound on "Phantasmagorical Personification of the Death Temple" (2020, Debemur Morti Productions), blending cavernous death metal with black metal textures and H.P. Lovecraft-inspired cosmic horror themes.

Anartria was a death metal and grindcore band from Palhoça, Santa Catarina, Brazil, part of the underground extreme metal scene of the state's southern coast. The band blended the punishing brevity of grindcore with death metal heaviness, operating as an independent act before splitting up.

Anastomose is a death metal and grindcore band from Sorocaba, São Paulo, Brazil, formed in 2020. Working in the tradition of Brazilian extreme metal, the band fuses the blunt force of grindcore with death metal brutality, operating as an independent act out of the São Paulo interior scene.

Anatofagia is a blackened gothic metal project from Moreno, in the western suburbs of Buenos Aires, built around vocalist Laura Causin and guitarist Nicolas Sonetti. The duo draws on black metal, death metal, and doom metal textures, with Causin's melodic female vocals giving the sound a gothic edge. Their releases include the self-titled album and the rawer follow-up Crudo.

Anatomy Corruption is a death/stoner metal band from Mundo Novo, Bahia, Brazil, formed in 2018. The band occupies an unusual niche, blending the psychedelic, riff-heavy groove of stoner metal with death metal aggression — a combination that sets them apart from the standard extreme metal output of Brazil's northeast.

Anax is a black metal band from Fortaleza, Ceará, Brazil, formed in 2011. Hailing from one of the largest cities in Brazil's northeast, the band operates in the underground black metal tradition, contributing to the region's gradually expanding extreme metal scene.

Anaxes is a progressive metal band from Caxias do Sul, Rio Grande do Sul, Brazil, originally formed in 2005 by guitarist Bruno Pinheiro Machado and drummer Thiago Caurio as an instrumental project before expanding into a full band with vocalists. Their debut album "Antithesis" (2010) drew comparisons to Symphony X, blending intricate guitar work with melodic, keyboard-accented arrangements, and the band has continued to develop within the South Brazilian prog-metal scene.

Ancaria is a progressive power metal project formed in 2012 by vocalist and keyboardist Ignacio Remis and guitarist Guillermo Olondriz in Argentina. The duo writes Spanish-language metal with sweeping arrangements, and their discography includes the 2022 album Mi Propio Destino and the 2024 full-length Contra el Viento. Both members handle composition duties jointly, with Remis also managing programming and production.