Demencia Extrema is an extreme metal band from Ituzaingó in the western greater Buenos Aires area, drawing on metalcore, death metal, and 1990s groove metal influences. The band released the EP Mundo Ruin in August 2015, a five-song record recorded and mixed by FedeSaurio Records in Castelar-Morón, Buenos Aires, with composer Matias Chao as a key creative force.

Dementiae is a black metal band from Santiago, Chile, whose members perform under the names Satanya, Draco, and Demonamorthus. Their debut demo Between Dementia and Death, released through Pagan Forest Records and Black Crusade Productions in a limited edition of 100 CD copies, draws on the atmospheric and depressive currents of early Burzum alongside elements of doom metal.

Dementors are a death/thrash metal band from Santiago, Chile, whose lyrics explore themes of blasphemy, violence, and dementia. The band appeared on the 2013 split release Evil Reincarnation alongside Santiago black/speed metal act Evil Force, with their tracks recorded and mixed by Jose Jara at Mazazor Studios in Santiago.

Demoledora is an all-female heavy metal band from Tafí Viejo, Tucumán, whose lineup features Zaira on vocals, Gise Fernández on guitar, Maru Portillo on bass, and Sofi Portillo on drums. The band draws on V8 and Megadeth as key influences and has performed at the Tafí Viejo Limón Rock festival, establishing themselves within the regional metal scene.

Demolishment was a death/thrash metal band from Rio de Janeiro, Brazil, formed in 2011 and active until splitting up around 2015. The band released the single "Abscond" (2011), the EP "Our Fury Is Unleashed" (2013), and the full-length "Liturgia Negra" (2018).

Demona is a speed metal project founded in 2007 by Constanza "Tanza" Godoy Díaz (Tanza Speed) in Valparaíso, Chile, with Tanza handling vocals and guitar across various lineups. The band released two full-lengths — "Metal Through the Time" (2012) and "Speaking with the Devil" (2013) — as well as a 2015 EP on Hells Headbangers Records featuring drummer Tormentor of Desaster and mastering by Joel Grind of Toxic Holocaust. The project later evolved into Outline in 2017.

Demoniah is a death 'n' roll band from Recife, Pernambuco, Brazil, formed in 2015. Drawing on the Entombed-style fusion of death metal with rock and punk energy, they released their debut album "Demoniahlizer" in 2018 through Narcoleptica Productions, a release described as overflowing with vicious energy and primal chaos.

Demonic Hate is a death metal band from São Luís, Maranhão, Brazil, active since 2018. An independent act, the band deals in raw, underground death metal with lyrical themes centered on death, satanism, and anti-Christianity.

Demonochorus is a Brazilian funeral doom metal project based in Valinhos, São Paulo, formed in 2019 by multi-instrumentalist Nataskia Müller, who handles all instruments. The band released the EP "Lost Faith" in July 2019, exploring themes of misery, depression, and spiritual decay through slow, crushing compositions.