Dictatorshit is a thrash and groove metal band from Puerto Santa Cruz, Santa Cruz, Argentina, featuring vocalist Hernán Carbone, guitarists Ivan Sosa and Eduardo Farias, bassist Claudio Lemes, and drummer Bruno Carcamo. The band released their debut EP Exterminio in June 2012, recorded at Polymúsica Studios in Río Gallegos, followed by the two-track Masacre al Sur in 2016.

Dieblast is a death/thrash/groove metal band from Santiago, Chile, formed around 2015 and anchored by Christian Argandoña (ex-Thornafire) on vocals and bass alongside producer Pablo Navarrete of Hielo Negro on bass, Eddie Valdebenito on guitar, and Fernando Rojas on drums. The band made their public debut in early 2022 with the politically charged single "Caos, Sangre, Peste," recorded at Panzound Estudios.

Diebrator is a melodic thrash metal band from San Justo, Buenos Aires, founded by guitarists Lucas Coronel and Elias Pérez with a stated aim of stepping outside conventional thrash conventions. The band released the EP Desnaturalización in October 2015, followed by the full-length Violencia/La Máscara de la Brutalidad in November 2016.

Defamatory is a death metal band from Medellín, Antioquia, Colombia, formed in 2016 and signed to Awakening Records. The band released their debut full-length "Premature Burial" in 2017 and followed it with "Path of No Return" in 2025.

Dimension Doom is a symphonic death/doom metal trio from Curitiba, Paraná, Brazil, formed in 2023 by experienced musicians from the local underground scene. The band crafts science fiction-themed death-doom with lush synthesizers and rotating guest guitarists, releasing their debut single "Dimension of Death" in September 2023 and their first full-length album "Prime Directive" in 2024.

Dinnamarque is a heavy/power metal band from Belo Horizonte, Minas Gerais, Brazil, led by vocalist and bassist Rafael Dinnamarque alongside guitarist partners and drummer Riccardo Linassi. The band released their debut album "One Spirit of a Thousand Faces" in 2020, blending traditional heavy metal with power metal, followed by "The Darkside of Human Nature" in December 2021, which leaned further into power metal with orchestrations and dynamic arrangements. They have shared stages with acts including Blaze Bayley, Sonata Arctica, and Kiko Loureiro.

Diorese is a death metal and goregrind band from Cuiabá, Mato Grosso, Brazil, whose lyrics in Portuguese explore the culture, rituals, and myths of ancient anthropophagic indigenous peoples. The band released their album "O Derramamento de Sangue Continuará" (The Bloodshed Will Continue) in December 2012. Their lineup consists of Hygor Cypriani on bass and vocals, Jorge Castro on guitars and backing vocals, and Luciano "Psycohorror" on drums.

Dios Serpiente is an industrial drone, doom, and post-metal project from Buenos Aires that released its debut album Fuego Austral in July 2023 through Venado Records, a seven-track record running just over 37 minutes. The band followed it with Duelo de Gigantes in 2024 via South American Sludge Records, cementing their presence in Argentina's heavy underground scene.

Dioxina was a thrash metal and crossover band from São Paulo, Brazil, active from 2015 and later split-up. The band self-released their five-track EP "Ordem e Regresso" in August 2015, delivering aggressive crossover thrash in the tradition of the São Paulo underground scene. They operated independently throughout their existence.