Carcará is a thrash metal band from Fortaleza, Ceará, Brazil, tracing their origins to 2007 under the banner "Horda Carcará." The independent act plays infernal thrash metal rooted in the aggressive 1980s tradition of heavy, thrash, and death metal, and has been an active presence in Fortaleza's underground metal scene.

Carcinosi is a death metal band from Porto Alegre, Rio Grande do Sul, Brazil, active since 1996 with reunions across multiple periods. The band self-released their debut demo "Transfigured in Cancerous Atrocities" in 1998 and continued releasing material including the full-length "Resumption" in 2019 via True Metal Records, with founding member Tiago Vargas (bass/vocals) as a consistent presence throughout their history.

Cardynal is a heavy metal and hard rock band from Bahía Blanca, Buenos Aires, formed by members Ariel Varas (vocals), Daniel Arévalo (guitar), Gastón Rodríguez (bass), and Guillermo Bertinat (drums). The band released their debut album Intro in 2021, recorded at Estudio Bonus Track in Bahía Blanca, having previously released a self-titled EP in 2019.

Carillon is a heavy/speed/progressive metal band from Rosario, Santa Fe, founded in 1989 by Sergio Colussi (vocals and guitar), Armando De Angelis (guitar), Alcides Cabrera (bass), and Fabio Reynoso (drums). The band built a discography spanning three decades, from the cassette release Carnal & Espiritual recorded at Alfa Centauro Studios in Rosario in April 1991 through to Absent Presence in 2019 before eventually disbanding.

Carnage is a black/thrash metal band from Betim, Minas Gerais, Brazil, listed on Encyclopaedia Metallum as an active act under Headbanger's Behavior. The band's lyrical themes center on anti-religion, death, darkness, and hell, placing them firmly within Brazil's extreme underground metal tradition.

Carnage Hell is an independent death metal band from Uberlândia, Minas Gerais, Brazil. The band explores themes of war, death, and destruction, and distributes their music through Bandcamp.

Carnage Valley was a death/black metal band from Belém, Pará, Brazil, documented on Encyclopaedia Metallum as a split-up act. The band was associated with Vampiria Records and focused on themes of destruction and death within the extreme metal underground of northern Brazil.

Carnal Atrocity is a death metal/grindcore duo from São Paulo, Brazil, formed in 2020 and comprising Karine Campanille (vocals, guitar, bass, synths) and Emiliano Borges (drums). The band released their debut album "Degenerescência" in June 2020, recorded at Estúdio Mitra and mixed at Crossroads Studio in São José dos Campos, São Paulo.

Carneross was a thrash metal band from Berazategui, Buenos Aires, whose lineup included vocalist and bassist Martín Echeniqué, drummer Alejandro Conde, and guitarists Alan González and Federico Conde. The band released two albums of aggressive Spanish-language thrash — Mass Violencia in 2012 and Religión es Muerte in 2016 — before splitting up.