Foul Womb is a death/black metal project from Sweden, formed in 2020. Their visceral name sets the tone for music that dwells in the repulsive intersection of death and black metal extremity.

Foulerah is a black/speed metal act from Bristol, England, active since 2022 and channeling aggressive velocity through blackened speed metal. The project combines the raw fury of black metal with speed metal's relentless pace.

Foulspawn is a black metal project from York, England, active since 2016 and delivering dark extremity from one of England's most historic cities. The project operates in the underground fringes of British black metal.

Fourth Autumn is a blackened death metal band from Newport, Wales, whose 2013 debut Our Extinction Event was recorded at Sonic Forge Studios in Cardiff. The album blends black metal, death metal, and melodic death metal across five tracks.

Fourth Monarchy is a symphonic black metal band from Venice, Italy, formed in 2019. They pair the grandeur of symphonic orchestration with black metal intensity, an approach befitting the theatrical, historically layered atmosphere of their Venetian home city.

Fovitron is a symphonic melodic black/death metal band from Athens, Greece, formed in 2014 by guitarist Fovitrus and vocalist Nuntius Mortis, signed to Alcyone Records. Their debut full-length Altar of Whispers builds on their 2016 EP with layered symphonic extremity.

Foyer du Chaos is a raw black metal/dungeon synth project from Avignon, France, formed in 2023. The project — whose name means "hearth of chaos" — blends raw black metal with dungeon synth from the Papal City of Provence.

Fra Waurhts is a black/death metal project from the Netherlands, active since 2014. Their Gothic-language name — derived from the Old East Germanic tongue — signals an antiquarian approach to extreme metal, channeling archaic darkness through black and death metal forms.

FraBezdan is an Austrian black metal one-man project whose creator describes it as a "hobbyonemanproject." Their self-released catalog includes albums titled "Visjoner om skjebne," "Globaler Flächenbrand!," and "Hate Eternal," drawing from raw, lo-fi black metal traditions with titles mixing Norwegian and German.