Kala Sumeriah is a stoner/groove metal band from Mendoza, Argentina, featuring vocalist Gus Banco Pravata, guitarist Edu Palladino, bassist Martin Fumarola, and drummer Alvaro Garcia Bensi. Their fourth studio album, Wormoboros, was released on April 27, 2022, produced by the band and recorded at The Arrival Studio.

Kalte Seetürme is a black metal and ambient project from São Paulo, Brazil, formed in 2024. The project has released three recordings — Kristallhallen, Nachtweg, and Blasser Glanz — all available on Bandcamp, with German-language titles pointing toward a Nordic-influenced aesthetic within the Brazilian underground scene.

Kalvarius is a melodic and progressive heavy metal band from Manaus, Amazonas, featuring vocalist Mardson Campell, guitarist James Oliveira, drummer Renato Melo, keyboardist Jackes David, and bassist Mykon. The band built a following in the Amazon region and beyond with their debut EP Visão do Rei and were selected for the Oxigênio Compilation among the fifteen greatest independent bands in Brazil. The group's lyrical themes drew from evangelical Christian values, channeling messages of peace and hope through a virtuosic prog metal sound.

Kamala is a thrash metal power trio from Campinas, São Paulo, formed by vocalist and guitarist Raphael Olmos alongside drummer Isabela Moraes and bassist Zé Cantelli. The band blends death and thrash metal riffing with oriental melodies and completed seven European tours, resulting in the live album Live in France (2019), which was widely cited as one of the best Brazilian live metal releases of that year. Their sixth studio album Karma (2023), released through French label M&O Music, further cemented their international profile, and the band was featured in the Diabolus in Musica exposition at the Philharmonie de Paris in 2024.

Kamanchaka is a heavy metal band from Iquique, Chile, whose music draws on the history and geography of Chile's far north. Their 2024 EP Infierno Real features four tracks including 'Esmeralda,' a song commemorating the 1879 naval Battle of Iquique, and 'La otra cara de la Moneda,' with the band's compositions and performance credited to Christopher Méndez and Gabriel Torres.

Kamaq is a black metal band from Lima, Peru, formed in 2021, whose name draws from Andean cosmology — "Kamaq" refers to the animating force or creator spirit in Quechua tradition. The band released their debut full-length "Los que vinieron antes" in 2024, channeling themes of nature and earth cult through their black metal sound.

Kamikaze is a Buenos Aires heavy metal band originally founded in 1985 by vocalist Enrique Gómez Yafal and guitarist Miguel Ángel Oropeza, both formerly of 100DB, alongside bassist Gustavo Perugino and drummer Claudio Gabriel Parolari. The band released classic Argentine metal albums No me detendrán (1988), Víctima del Rock (1989), and Kamikaze III (1992), later reuniting and issuing Dueño de los Cielos in 2011.

Kamikaze is a heavy metal and hard rock band from Belo Horizonte, Minas Gerais, originally formed in 1984 and reactivated in 2016. The band released a self-titled EP in 1986 featuring the track "Machado de Guerra," which became an anthem for an entire generation of Brazilian metal fans, and followed it with the full-length Kamikaze II in 1990 on Cogumelo Records. A 2023 reissue collected both early records alongside six previously unreleased tracks from 1994.

Kampfwagen is a black/death metal band from Barranquilla, Colombia, formed in 2016 and signed to DevilMind Productions. The name translates from German as "battle vehicle," and the band explores themes of death, blasphemy, and ritual darkness, with their 2019 demo "Stalking of Death" as their primary release.