Beltane is a heavy metal band from Irati, Paraná, Brazil with a prolific independent discography spanning albums such as "The Ritual Has Begun...", "Democide", and "Maledictum". The band delivers a direct, energetic sound rooted in the classic metal and progressive rock of the 1970s and 1980s, and remains active as an independent act. They have self-released numerous full-length albums and EPs over the course of their career.

Black Century was a heavy metal band from Natal, Rio Grande do Norte, Brazil, active from 2013 until splitting up. Drawing influence from classic acts such as Black Sabbath, Metallica, and Iron Maiden, the band released the EP "Shadow Man" (2013) and the full-length "Crusade for the Glory" (2014) before disbanding.

Black Rain was a Heavy Metal band from Campos de Jordão, São Paulo, Brazil, listed in the Encyclopaedia Metallum. The band formed and disbanded in 2025, leaving a short-lived presence in the São Paulo state metal underground. Specific releases and lineup details were not documented publicly beyond their Metal Archives entry.

Black Side is a heavy metal and hard rock band from Haedo, in the Buenos Aires metropolitan area, who have been active since 2007. Over the course of their career they have released four albums — De que manera terminar (2007), Evolución (2009), Take Me Away (2014), and Atlantis (2017) — building a steady following in the Argentine heavy rock underground.

Blackened was a thrash and heavy metal band from Curitiba, Paraná, Brazil, formed in late 2012 by members including João Wegher and Marcelo Martins. The band released a demo titled "Third World Thrash," a split EP "Together in the Circle Pit" (2014), and an EP called "Underground Attack" before recording their first full-length album "Truth Behind Destruction" in 2016. The band has since split up.

BlackSkull is a speed/heavy metal band from Brasília, Distrito Federal, Brazil. Founded by guitarist/vocalist Fernando Cellarius, bassist André Arnaut, and drummer Lourenço Sant'Anna, the band plays hard-hitting speed metal with lyrical themes covering power, politics, war, and the metal way of life.

Blades of Steel is a heavy metal band from São Paulo, Brazil, fronted by vocalist Yara Haag. Drawing influence from Judas Priest, Accept, and Mercyful Fate, the band released a self-titled track in 2024 and subsequently signed with Alone Records of Greece for wider international distribution.

Blair is a heavy metal band from Aracaju, Sergipe, Brazil, one of the few metal acts to emerge from the northeastern Brazilian state. The band sings in Portuguese and has been described as evoking the spirit of 1980s hard rock and heavy metal, with well-crafted guitar work and a melodic sensibility that connects to classic rock traditions.

Blazing Dog is a traditional heavy metal band from Brasília, Brazil, formed in 2009 and playing in the style of classic acts like Judas Priest, Iron Maiden, and Manowar. The band recorded their album "Deus Ex Machina" at Orbis Studio and Jam's Studio in Brasília, covering lyrical themes of history, war, literature, and metal. They remain an independent act within the Brazilian capital's metal scene.