Black War is a black metal band from Taubaté, São Paulo, Brazil, tracing its roots to 1996 when members Holykran and Hammer founded a project called Necronomicon, before adopting the Black War name. The band's lyrical themes center on anti-Christianity, misanthropy, and mysticism. Their debut album "Winter Sorrow" was released in 2009 through Hammer of Damnation, incorporating material from their 1999 demo "As the Darkness Prevails."

Black Wind is a black metal band from Guarulhos, São Paulo, Brazil, formed in 1999 and now split up. The band operated as an independent act within the Brazilian underground black metal scene. Their Metal Archives entry documents them under contact for Arch Devil Lucfatanaz in Guarulhos, SP.

Black Witch is a stoner and doom metal band from Mossoró, Rio Grande do Norte, Brazil, formed in May 2015. The band features Lorena Rocha on vocals alongside Rafaum Costa on guitar, and draws on 1970s-style heavy rock recast through down-tuned, doom-laden arrangements. Their discography includes the debut EP "Aware" (2015), the full-length "Solve et Coagula" (2016), and the two-part release "The Spiral" (2021).

Blackcircle are a Santiago-based experimental progressive metal band signed to Australis Records, a Chilean label dedicated to metal from the southern tip of the world. Their album "Requiem in Silence," recorded by brothers Jorge and Raúl Drolett, is an eight-track work blending experimental death metal with black metal atmospheres, released as a 200-copy digipack CD through Australis Records.

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.

Blackened Entrails is a blackened death metal band from São Paulo, Brazil, formed in 2023. The band blends black and old-school death metal vocals with grindcore influences, singing primarily in Portuguese. Their debut full-length, Manifesto Sepulcral, was released in March 2024 through Black Hole Records, featuring seven tracks covering themes of death, decay, and philosophy.

BlackForce is a death/thrash metal band from Niterói, Rio de Janeiro, Brazil. The band is signed to Profane Records and addresses themes including politics, religion, and the environment in their music.

Blackgoat Holocaust was a black/thrash metal band from Belo Horizonte, Minas Gerais, Brazil, active briefly before splitting up. The band was an independent underground act exploring themes of death, lust, and destruction in the tradition of the Brazilian extreme metal underground.

Blackning is a thrash metal band from Santo André, São Paulo, Brazil, formed in December 2013. The band has released three studio albums — Order of Chaos (2014), ALieNation (2016, nominated for best national heavy metal album at the Prêmio Dynamite de Música Independente), and Awakening Rage (2023) — and toured Europe in 2017, visiting Germany, France, the Netherlands, Belgium, Poland, the Czech Republic, and Russia.