Hanagorik is a thrash and groove metal band from Surubim, Pernambuco, Brazil, formed in 1991 and one of the most enduring metal acts from the country's northeast. The band released a series of recordings including the demos Screaming Again (1995) and the full-length Uncivil (1997), followed by For Kids With Some Problems (2002), the latter issued during a second European tour that took them through Germany, Austria, and Belgium. They also released the EP Alceu ao Nosso Jeito (2012), a notable tribute to Pernambuco folk icon Alceu Valença reimagined in a metal context.

Hell Chaser is a thrash/death metal band from Belo Horizonte, Minas Gerais, Brazil, formed in 2017. The band features Victor Ogurot Paiva on vocals and guitars, André Vasconcellos on guitars, Rafael Paim on bass, and Lucas Alexandre on drums. Their release Belo Horizonte: Cidade Porrada, listed on Metal Archives, reflects the aggressive thrash energy of the city's underground metal scene.

HellArise is a female-fronted thrash and death metal band from São Paulo, Brazil, active since 2012. The band released the EP Functional Disorder in 2013, recorded at Estúdio Pedrada in São Paulo, earning recognition as one of the standout debuts on the Brazilian underground scene that year. Their subsequent releases, including More Mindless Violence and Human Disgrace, are available on Bandcamp and showcase a sound that moves between heavy, thrash, and death metal.

Helltribe is a thrash/groove metal band from João Pessoa, Paraíba, Brazil, formed in 2014 and notable for being one of the first heavy metal acts to record an album from the state of Paraíba. Their debut EP "Brutal Reality" (2016) weaves Brazilian and African percussion rhythms into their aggressive sound, addressing themes of cannibalism, war, and social problems.

Hellway Patrol is a heavy/thrash metal power trio from Londrina, Paraná, Brazil, formed in 2017 by vocalist and bassist Ricardo Pigatto, guitarist Thiago Franzim, and drummer João Bolognini. The band crafts post-apocalyptic and dystopian-themed metal, releasing the EP "Desert Ghost" in June 2018, followed by their self-titled EP.

Heterodoxa is a thrash/death metal and crossover band from Junín de los Andes, Neuquén, formed in 2015 by members known as Mati, Bruno, Jano, and Tincho. The band released a self-titled debut in February 2015 and followed it with the EP "La Tierra Esta en Crisis" in April 2019, both independently released.

Hocnis is a thrash and death metal band from Belo Horizonte, Brazil, active since 2010. The band released the Demo(niac) in June 2010 and the three-track EP SS Ourang Medan in October 2016, the latter taking its name from the legendary ghost ship story and available across major streaming platforms.

Humanicidio was a thrash and heavy metal band from Rosario, Argentina, whose lineup included David Sanchez on guitar and vocals, Nicolás Sanchez on lead guitar, Franco Mena on bass, and Diego Forteaga on drums. The band released a four-track demo in May 2016 and a self-titled album in 2018 before splitting up.