Confessori is a progressive and power metal band from São Paulo, Brazil, listed on the Encyclopaedia Metallum and active in the city's long-established metal scene. The band plays in the melodic progressive metal tradition that São Paulo has been known for through acts like Angra and Shaman.

Confiteor is a heavy metal band from Salvador, Bahia, Brazil, formed in 2018 and active within the city's growing metal scene. The band performs traditional heavy metal and is registered in the Encyclopaedia Metallum as part of the Brazilian heavy metal underground.

Confounded is a death metal band from Recife, Pernambuco, Brazil, formed around 2013 and active in the northeast Brazilian extreme metal scene. The band plays heavy, groove-inflected death metal and maintains a presence on Bandcamp and Instagram under the handle @confoundedband.

Confronto was a deathcore and metalcore band from Rio de Janeiro, Brazil, formed around 2001 and known for politically charged Portuguese-language lyrics. The band released several albums including "Causa Mortis" (2005), "Sanctuarium" (2008), and "Die Young" (2014) before splitting up.

Conjurador is a black/death metal project from Porto Alegre, Rio Grande do Sul, Brazil, formed in 2021 with themes centered on Satanism and occultism. The band released multiple demos in their first year of activity and followed up with the EP "Conjurers of the Infernal Key" in 2022.

Conquistadores is a thrash/heavy metal band from Osasco, São Paulo, Brazil, formed in 2016. The band performs Portuguese-language metal, with tracks such as "Lutar e Conquistar" and "Guerreiros do Metal" reflecting themes of battle and metal pride. They have played live at local São Paulo-area venues including Arena Metal SP and remain active on the regional scene.

Consecuencias is a death/sludge and hardcore band from the western suburbs of Buenos Aires, Argentina, formed around 2019 by Ivann on vocals, Ezequiel on bass, Faka on drums, and xMarc on guitar. They self-recorded their Demo 2018 across various locations in the west of the city and later released the full-length Todo Abismo Calma Sus Ojos, delivering politically charged extremity with a raw, DIY ethos.

Conspiracy was a death/thrash metal band from Presidente Prudente, São Paulo, Brazil, active in the early 1990s before splitting up. The band was an independent act within the Brazilian extreme metal underground scene of that era. They are documented on Encyclopaedia Metallum as part of the wave of São Paulo-interior bands that emerged alongside the broader Brazilian thrash and death metal movement.

Consumed is a death metal band from Quillota whose recordings have appeared through Chilean extreme metal label Mushantufe Productions, including the EP "Dehumanize to Demonize" (2015) and the rehearsal cassette "Profanation" (2017). Their lyrical focus on anti-religion, misanthropy, and blasphemy situates them within the blasphemous Chilean death metal underground.