Incidamus is a dark heavy metal project founded in Buenos Aires, Argentina by a musician known as Desgarro, drawing on themes of depression, betrayal, and isolation. The band released the album "El Hedor, La Ruina, La Sangre" in December 2017 through Despreciable Realidad Fanzine, an eight-track record that showcases their bleak, heavy-punk approach.

Incineracion is a thrash metal band formed in 2018 in Melipilla, Chile, self-described as a "rotten Thrash Metal band" rooted in aggression and speed. Their discography includes the Demo Tape 2018, the Tortura Mental EP (December 2018), the Odio y Vengaza full-length, and the 2023 single "Sangre impía."

Incinerador is a death metal band from Porto Velho, Rondônia, Brazil, operating out of one of the country's most geographically isolated extreme metal scenes. The band released "Enterrado Vivo" ("Buried Alive") through the underground label Lux Ferre Prod & Distro, and also appeared on the 2015 tribute compilation We Worship Desaster with a cover of the German black metal act's "Into a Magical Night." Their lyrical themes center on war, hate, death, and blasphemy, placing them firmly in the raw, uncompromising end of Brazilian extreme metal.

Incinerated Clitorial Region was a death-grind band from São Cristóvão, Sergipe, Brazil, active between 2005 and 2008. The self-produced quartet—comprising vocalist Aubert, bassist Luciano, drummer Sidney, and guitarist Lucas—released the demo "Paranormal Impulse to Kill" in July 2007, their only documented recording. Their themes fell squarely within the gore and splatter subgenre of Brazilian underground death metal.

Incinerating Prophecies is a brutal death metal band from Barranquilla, Colombia, active since 2009. The band released two full-lengths — Slay the Damned Impostor (2011) via North American label Sevared Records and Depravity Incarnate (2014) via Italian label Death Metal Industry — preceded by the demo Ritual Slave (2010).

Incivus Infectus is a death metal band from Curitiba, Brazil, formed in 2013. They released a self-titled demo the same year through Cianeto Discos, featuring tracks such as "Incisões", "L.S.D.", and "Discórdia", followed by a self-titled Bandcamp release and the single "SUBTRAÇÃO" in 2016.

Incognitum is a black/death metal band from Porto Alegre, Brazil, formed in 2014. The band built a prolific early catalogue with four releases in quick succession: the debut album Odissey (2014), followed by Disastrum (2016), Discolor (2017), and In Through the Gates of Hell (2017).

Incognosci is a death metal band from Rio de Janeiro, Brazil, formed in 2013 from the remnants of brutal metal project Necropse, with a sound rooted in 1990s old-school death metal. The band — featuring Iron Júnior on vocals, Jonathas Pereira on guitar, Marcos Medeiros on bass, and Braulio Drummond on drums — released their debut full-length A Biography of Madness in October 2020, recorded at AM Studios in Rio de Janeiro and mastered at Grindhouse Studios in Athens, Greece.

Incredulus is a blasphemous black metal band from Contagem, Minas Gerais, Brazil. The band released the album Aos Ímpios in 2009 as a CDr, a ten-track work with Portuguese-language titles issued independently and later distributed through Australis Records.