Hoctaedron is a death metal band from São José dos Campos, Brazil, formed in 2003. The band released the demo "Celebration of Bloodshed" in 2003, a four-track recording featuring tracks such as "Human Incineration" and "Pleasures of Flesh." The band has since split up but their recordings remain available on Bandcamp.

Hokmoth is a black metal band from Curitiba, Brazil, featuring guitarist Yuri Seima and drummer Mario Kmiecik. The duo released their debut EP "Neophytvs" in October 2019, a five-track work with themes described as poetic representations of mental and spiritual processes. Their lyrics and art are oriented around what they call the dark and rejected side of all things.

Holder of Souls is a heavy metal band from Bragança Paulista, São Paulo, Brazil, formed in 2019. The band's lineup includes Daniel Bueno on vocals, Tiago Schievenin and Rafael Cintra on guitars, Emerson Paulo on bass, and Daniel Franco on drums. They released their self-titled debut album in September 2019, a nine-track effort spanning just under 52 minutes.

Hole of Jesus is a black/death metal band from Franco da Rocha, São Paulo state, Brazil, formed in 2019. They released their debut full-length "Rapture to Hell" in October 2019, an eight-track album featuring songs such as "Bowels of Christ (The Blasphemy Is Necessary)" and "Face the Leviathan." The band also appeared on a split release with Necrogosto.

Hollowmind is a progressive metal band from São Paulo, Brazil, originally forged in 1993, playing a blend of heavy metal and progressive rock with comparisons drawn to Queensryche and Fates Warning. The band's core members include Rob Gutierrez on bass and vocals and Ale Silveira on guitar. Their discography spans albums including "Soundscape of Emotions" (2007), "The Cardinal Factor" (2014), "Inside an Extended Play" (2021), and the covers album "Under the Influence" (2024).

Hollowpoint Damage was a groove/thrash metal band from São Paulo, Brazil, formed in 2025. The band released the EP Killing Disorder in July 2025, their sole recorded output before splitting up.

Holy Cross is a metal band from São Paulo, Brazil, formed in 2011, blending heavy and gothic metal in their early work before evolving toward an epic neoclassical sound. The band's lineup features Emerson Olaf on vocals, drums, and keyboards alongside guitarist Bruno Zubi and bassist Vynill. Their 2011 album Vaterland, which explores medieval and Christian themes, is available on Bandcamp and was also represented on the Metal Storm VII compilation.

Hombre Viejo is a black/thrash metal band from Necochea, Buenos Aires, formed in 2012 and currently active. Their discography spans four albums: Solitario Ser (2012), En la Quietud del Tiempo (2014), Del Fuego (2016), and Nueva Salida del Sol (2018), with lyrical themes centered on nature, occultism, and humanity.

Homeostase is a Brazilian grindcore band formed in 2022. They released their debut EP A Procura de Material Humano in August 2022, a six-track effort with tracks including Fase Terminal, As Viudas de Nagasaki e Hiroshima, and Progresso do Regresso.