Choke is a groove/death metal and grindcore band from Curitiba, Paraná, Brazil. Signed to Top Music Brazil, the band's lyrical themes center on death, misery, and social unrest, and their early releases include the demo "Dictatorshit Holocaust from Third World" (1999) and the split CD "Manifest" (2001) with STN, followed by "Slum Radio" in 2003.

Cicuta was a death metal band from Santo Antônio de Jesus, Bahia, Brazil, that has since split up. The duo — comprising Pedro Rodrigues on bass, synths, and vocals, and Sérgio Gregório on drums — released a self-titled album with nine tracks. Their music represented a raw, underground strain of Brazilian death metal from the interior of Bahia.

Cirrhosis is a death metal band from Uberlândia, Minas Gerais, Brazil, originally formed in 1988 by members who also played in Sarcófago; after dissolving in 1993 they reformed in 2001 and signed with the legendary Cogumelo Records. The band released the full-lengths "Alcoholic Death Noise" (2002) and "Drinks From Hell" (2009), built around a booze-and-brutality lyrical identity rooted in the classic Brazilian extreme metal tradition.

Clamatorius is a black/death metal band from Goiânia, Goiás, Brazil, originally active from 1999 to 2005 under their own name after an earlier incarnation as Postumus (1998–1999). The band is notable for fusing extreme metal with Christian lyrical themes and released the five-track album "Consummatum Est" through Blackened Label Records.

Clan dos Mortos Cicatriz is a death-punk band from Curitiba, Paraná, Brazil, blending raw black metal, death metal, and hardcore punk into what the underground has called "nekro-hardcore." The band released their debut album "Técnicas de Morte" in March 2025 via Sentient Ruin Laboratories, a 15-track, 25-minute record described as a grim manifesto drawing imagery from slums, prisons, morgues, and war zones.

Clemency is a Christian death metal band from Londrina, Paraná, Brazil. The band released the demo "Satan's Funeral" (1998) and the full-length "Spiritual Domination" (1999), the latter reissued in 2019 via Warriors Records and Eirene Records. Their lyrical themes centered on Christianity, distinguishing them within Brazil's death metal underground.

Coagulo was a death metal band from San Juan, Argentina, formed in 2015 and later split up. The five-piece lineup featured Julián Ibars on vocals, Martín Manrique and Julio Rosales on guitars, Elías Vega on bass, and Daniel Fernández on drums.

Coffinfeeder is a death metal band from Sabará, Minas Gerais, Brazil. The band has recorded material including the track "Enslaved by Ignorance" and maintains an active presence in the Brazilian underground death metal scene. They operate independently and have a Bandcamp page under the handle coffinfeeder666.

Coldblood is a death metal band from Rio de Janeiro, Brazil, originally formed in 1992, with themes rooted in Satanism and anti-Christianity. After two break-ups and a permanent reformation in 2005, the band released their debut full-length "Under the Blade I Die" in 2007, followed by "Chronology of Satanic Events" (2013) and "Indescribable Physiognomy of the Devil" (2016), the latter released through Selfmadegod Records.