Fallen Spell is a Brazilian raw atmospheric black metal project, formed in 2015, that explores the unconscious mind and dreamlike states through a blend of abrasive noise and melancholic passages. The project released the full-length Retorno às Sombras in 2025, an eight-track album running approximately 38 minutes, alongside earlier recordings including Ausência Suspensa and the Cold Room demo.

Falsa Luz is a raw black metal and punk unit from Belo Horizonte, Brazil, formed in 2020. The trio, credited under the initials D.C., D.D., and G.N., draws comparisons to acts like Bone Awl, blending tremolo-driven riffs with tormented vocals. Their discography includes the albums Breu Eterno, Por Linhas Tortas, and Vozes Penadas, all self-released through their Bandcamp.

Fantasma is a doom metal band from Dourados, Mato Grosso do Sul, Brazil. Their 2021 demo Drogma featured a lineup of Zumbi on vocals, Vênus on guitar and bass, Hellvuncan on keyboards, and Phantasmagoria on drums, and was recorded at Estúdio Tereré and released through Dark Abyss Records.

Fanttasma is a post-black and doom metal band from São Paulo, Brazil, formed in 2013. Their debut album Another Sleepless Night (2013) featured vocals by Thiago Andrade, drums by Rafael Galbes, and guitars and bass by Rafael Augusto Lopes. The band later shifted toward a more atmospheric rock sound, releasing the album Sailing in 2020.

Far from Everything is a solo atmospheric black metal and ambient project from Brazil, founded by musician Edmilson in 2019. The one-man project has been prolific since its inception, releasing numerous instrumental works including The Howl of the Winds (2024) and collaborating on splits such as The Infinite with BÁL. The project's music blends atmospheric black metal passages with dungeon synth and ambient textures.

Farscape is a thrash metal band from Rio de Janeiro, Brazil, whose roots trace back to 1998. The band released three albums — Demon's Massacre (2003), Killers on the Loose (2006), and Primitive Blitzkrieg (2013) — before going silent for a decade while members participated in projects including Whipstriker, Atomic Roar, and Apokalyptic Raids. They returned in 2023 with Purged and Forgotten, released through Dying Victims Productions.

Fastígio was a raw and atmospheric black metal project from Blumenau, Brazil, active from 2018 until their dissolution. The project released at least two recordings — a self-titled work and Transcendência — exploring themes of mysticism, nature, spirituality, and darkness across a blend of raw black metal and ambient soundscapes.

Fat Grass is a stoner/doom metal trio from Córdoba, Argentina, built around guitarist and vocalist Hernan "Alcoholica" alongside bassist Franco Mascaro and drummer Marcos "Lobo" Sosa. The band released their debut album "Deep Trip" in 2010, followed by "Shadows" in February 2022 and their self-titled third album in March 2025, and toured the West Coast of the United States in 2015.

Fatalys is an atmospheric black metal band from Santiago, Chile, formed in 2014. They released two recordings in 2024: the full-length En la lejanía del alba and the EP Solitud, establishing themselves within Chile's growing atmospheric and post-black metal underground.