Forlorat is a melodic death/black metal project from Pavlovo in the Nizhny Novgorod Oblast, formed in 2024. They blend melodic death metal with black metal elements from the small Volga-region city known historically for its metalworking tradition.

Forlorn World is a melodic death metal project from Manchester founded by Josh McMorran of Bloodshot Dawn, weaving epic narrative plots together with technical melodic death metal. Their 2020 concept album Umbra features guest solos from multiple musicians and was mastered by Jacob Hansen in a limited pressing of 400 copies.

Form of Existence is a technical deathcore band from Sofia, Bulgaria, formed in 2023. The band combines the precision of technical musicianship with the brutality of deathcore, representing a newer wave of extreme music from the Bulgarian capital.

Formaldehyde is a death metal band from Almada on the south bank of the Tagus opposite Lisbon, formed in 2020 after earlier work in death/thrash metal. Their chemical-preservation name matches the clinical aggression of their death metal from greater Lisbon.

Formaline is a brutal death metal band from Moscow, Russia, formed in 2016. Named after the chemical preservative, they deliver clinical, precise brutal death metal from Moscow's deep extreme metal underground.

Formidamen is a death metal band from Ussuriysk in Russia's Far East, active since 2011. They deliver death metal from the Pacific coastline region near the Chinese and North Korean borders, one of the most geographically remote metal outposts in Russia.

Formis is a death/thrash metal band from Sosnowiec in the Silesian Voivodeship, formed in 2014. They deliver punishing death/thrash from the heart of Poland's most densely urbanized and industrial region.

Formless is a death/thrash metal band with funk influences from Bielsko-Biala in southern Poland, active since 2010. Their unusual incorporation of funk elements into a death/thrash framework makes them one of the more stylistically adventurous acts in the Polish extreme metal underground.

Formula Fiction is a death metal/grindcore band from North Brabant in the Netherlands, active since 2010. They pair the technical precision of death metal with grindcore's brevity and intensity from one of the Netherlands' most metal-rich provinces.