Crystal Lake is a thrash metal band from Leme, São Paulo, Brazil, with roots tracing back to the late 1990s and a current active lineup. The band has released albums including Terror Machine (2007) and Death Row (2018), playing a straightforward traditional thrash metal style. They remain active in the Brazilian underground metal scene.

Crânio is an independent thrash metal band from João Pessoa, Paraíba, Brazil. The band plays aggressive thrash metal and is part of the underground metal scene in the northeastern Brazilian state of Paraíba, with their music available on Bandcamp.

Culto Primitivo is a thrash metal and hardcore band from Venado Tuerto, Argentina, formed in 2017. The band — vocalist Atuel, bassist Pol, drummer Matías, and guitarist Nacho — released a self-titled debut album on September 19, 2017, delivering eleven tracks of aggressive crossover-edged thrash from the Argentine interior.

Cursed Slaughter was a crossover thrash metal band from São Paulo, Brazil, known for their aggressive, old-school approach to the genre. The band released the album "Metal Moshing Thrash Machine" in 2012, a 12-track record praised for its palm-muted riffing, energetic fretwork, and ferocious vocals, alongside the EP "One Last FixXx". The band eventually split up, leaving behind a well-regarded contribution to the Brazilian crossover thrash scene.

CxFxCx is a crossover thrash band from Canoas, Rio Grande do Sul, Brazil, tracing their roots to the early 1990s when a group of teenage skaters formed the project in the city's underground scene. The band has remained continuously active and celebrated their 30th anniversary with a live-in-studio album recorded in a single day at Estúdio Soma in Porto Alegre, featuring 15 tracks spanning all phases of their career.

Cárcere is a thrash metal band from Rio de Janeiro, Brazil, formed in 2018. The independent band released their debut EP "Crimes de Guerra" in December 2018, a five-track slab of aggressive Brazilian thrash rooted in the classic traditions of the genre.

Cérebro de Galinha is a crossover/thrash hardcore band from Marabá, Pará, Brazil, formed around 2015 and operating independently. The band plays aggressive, politically charged material and has released two albums: "Sociedades Secretas" (2018) and "Norte em Chamas" (2021).

Cülpado is a death/thrash metal project from Curitiba, Paraná, Brazil, founded in 2021 by Jefferson Verdani, a drummer known from bands including Murdeath, Axecuter, and Sad Theory. Operating largely as a one-person effort, Verdani composed, recorded, and performed all instruments and vocals on the debut album Romper da Realidade, released on December 15, 2021 via Kill Again Records. The album's lyrics draw from the crimes of Brazilian serial killers, with the title inspired by a phrase used by forensic psychiatrist Guido Arturo Palomba.

D.F.C., short for Distrito Federal Caos (Federal District Chaos), is a crossover thrash and hardcore band from Brasília, Brazil, widely regarded as one of the first hardcore punk and crossover bands to emerge from the country's capital. The band plays politically driven material with punk roots that evolved into a heavier thrash and crossover sound, and their catalog includes the albums "Tchan Nan Nan Nan Nan" and "Igreja Quadrangular Do Triângulo Redondo."