Fuenteovejuna was a Buenos Aires groove/death metal band that released a self-titled four-track album on July 9, 2018. The band blended groove metal and death metal with elements of thrash, and split up after a short run.

Fulminante is a thrash/death metal band from Pombos, Pernambuco, Brazil, formed in 2018. The band has released several independent recordings including the EP O Início do Fim, tracked at InTocas Studio in Caruaru, and the EPs Liberte a Besta and Fuerza y acero, both released in 2023.

Funebrö is a black/death metal band from Mongaguá, São Paulo, Brazil, formed in 2017. They released a cluster of recordings in their debut year — including Ritual of Doom, Curse of the Dead, Necromancy, Death by Metal, and Satanists — and returned in 2023 with the release Mentecaptos.

Funeral Vomit is a death metal band from Barranquilla, Colombia, formed in 2020 by C. Monsalve (vocals/guitar), Y. Lopez (guitar), H. Montaño (bass), and J. Carvajal (drums). Rooted in the cavernous, primitive style of Autopsy, Mortician, and Incantation, the band released their debut full-length "Monumental Putrescence" in 2023 and followed it with "Upheaval of Necromancy" in 2025 via Xtreem Music.

Fúria Infernal is a raw black/death metal band from Marília, São Paulo, formed in 2023 and drawing explicit inspiration from Brazilian extremists Sarcófago alongside Blasphemy and Beherit. The band released their debut four-track EP "Às chamas do inferno" in December 2023, with Rafael Cerberus credited on the recording. Their sound channels the lo-fi ferocity of the South American black metal underground.