Cremasma is a black metal band from Sumaré, São Paulo, Brazil, originally active from 2012 to 2014 before reforming in 2023. The band plays raw black metal with anti-Christian and misanthropic themes, and released a demo in May 2023 as an independent digital release.

Cremation Pyre is a three-piece thrash/black/death metal band from Santiago, Chile, active since the late 2010s. The band recorded their rehearsal session "The Flame Begins" in 2018 and followed it with their self-titled EP in September 2019, which was recorded and mixed by B. Barrantes at Necrotic Studios, featuring original material alongside a cover of Schizo's "Electric Shock".

Creptum is a black metal band from São Paulo, Brazil, formed in 2003 after operating briefly as Nekros. Signed to Drakkar Productions South America, the band released their debut full-length Of Lies, Curses and Blood in 2016, followed by the EP Reborn in Flames (2017) and the sophomore album VAMA in 2020, a nine-track record drawing on occult and literary themes.

Crow Dominions is a black metal duo from Mendoza, Argentina, formed by the musicians known as Hellpher and Misahn after their previous band Valquiria disbanded. The duo released Emerging Holocaust in 2021 and have been active on Bandcamp with tracks including Ignis Luciferian Symphony.

Crux Cullum is a death/black metal band from Belo Horizonte, Minas Gerais, Brazil, formed in 2007. The band operates within the underground extreme metal scene of Belo Horizonte, a city with a long tradition of producing extreme metal acts, blending black and death metal elements in their sound.

Cult of Enthropy is an instrumental black metal band from São Paulo, Brazil, formed around 2020. The band released their debut album Embrace the Void on October 21, 2020, followed by a limited physical CD edition of 100 copies in May 2021. Their music is entirely instrumental, exploring atmospheric black metal textures without vocals.

Culto a la Malevolencia is a death/black metal band from Arica, Chile, formed in the late 2010s and active with blasphemous and anti-Christian lyrical themes. Their debut EP "In Nomine Capra," released in January 2019, draws conceptual inspiration from the Cueva de Salamanca, a Chilean site historically associated with witchcraft.

Círculo Polar is an Argentine black metal project that released the album Atemporal in 2015, establishing the band's raw and atmospheric approach to the genre. The project has maintained an underground presence through its Bandcamp page, where tracks such as Mar Muerto reflect a cold, minimalist black metal aesthetic.