Finish Him is a thrash/crossover band from Córdoba, Argentina, featuring Cuca on vocals, Mauro on guitar, Fer on bass, and Ramiro on drums. They released their demo "If The Thrashers Are United, Then We'll Never Be Divided" in November 2013, and followed it with the full-length "Choose Your Destiny" in 2024.

Finitude is a heavy and power metal band from Aracaju, Sergipe, Brazil, founded in August 2005, with a lineup of Marcelo Menezes on vocals, Luiz Gustavo and Ícaro Reis on guitars, Djalma Moreira on bass, and Arnaldo Jr on drums. The band released their debut demo Way of Wisdom in April 2006 and followed it with the promotional single Never See My Fall in 2008, before completing their first full-length, Dissensio Homines, Pt. 1, which appeared in 2013 on MS Metal Records. Their lyrical and conceptual focus is described as centered on the relationship between humanity and the natural world.

Fire Darkness is a black/speed metal band from Bogotá, Colombia, with lyrical themes of anti-Christianity and blasphemy. Active since 2024, they have appeared on two splits: Prowling Poison of Darkness (2023) and Conjuration of Black Speed Mayhem (2024).

FireGun is a groove and thrash metal band from Guarulhos, São Paulo, Brazil, formed in October 2009. Their debut EP What's the Reason?, recorded in February 2013 at Estúdio GR in São Paulo, features four tracks and showcases the band's lineup of vocalist Raimundo Rodriguês, lead guitarist Ricardo Oliveira, rhythm guitarist Ivan Santos, bassist Samuel Martins, and drummer Yuri Alexander. The band was working toward a debut full-length titled Inheritance of a Blind Nation as of 2017.

Fireline is a melodic heavy metal band from Fortaleza, Brazil, active since 2017. The band has released multiple tracks and albums through their Bandcamp page, including the album "Crossing Lines" and singles such as "Don't Look Back" and "Under Fire."

Fiscales Muertos is a grindcore and crust punk band from Punta Alta, Argentina, formed by four members — Atrofius on vocals, Yoni on guitar, Chinok on bass, and Gomez on drums. The band released a self-titled EP available on their Bandcamp page, playing fast and raw noise-driven punk metal.

Fishead is a progressive metal band from São José dos Campos, Brazil, founded in December 2009 by guitarist Danilo Martins and drummer Rodrigo Kusayama as a university project before expanding into a full band. They released their debut album "Green Hope" in 2012, followed by the second album "In My Hell" in 2018, the latter recorded at Acrobata Studio and featuring a fusion of hard rock and progressive metal with aggressive lyrical themes. Vocalist Jezer Ferris, a musician with over 30 years of experience, joined the lineup in 2015.

Fisura Craneal is a brutal death metal band from Buenos Aires whose lineup includes Pavlo, Mario, Fede, and Visiones. They released their debut "La Logia del Mal" in February 2013, and followed it with "Desobedientes Oms" in March 2015 — a live recording captured at the sixth edition of the Slaughter Metal Fest in Pilar in December 2014.

Flagellum is a melodic death metal band from Salta, Argentina, one of the few extreme metal acts from that northwestern city. The band has been active since 2004 and released the demo "Insomnio" in 2015, self-releasing material independently on Bandcamp under the name flagellumdei.