Filii Nigrantium Infernalium is a black metal band from Lisbon, active since 2015, evolving from pure black metal into a hybrid of black, heavy, and thrash metal. Their Latin name — 'Sons of the Blackened Infernal' — and stylistic breadth make them one of the more distinctive acts in the Portuguese underground.

Final Cry is a heavy/power/thrash metal band from Hameln, Germany, whose sound later evolved toward melodic thrash/death metal. The band has navigated a stylistic journey from classic heavy and power metal roots into heavier, more aggressive territory.

Final Flame is a heavy metal/hard rock band from Veliko Tarnovo, Bulgaria, that originated as a university student band in 2007. After performing at local venues and festivals, they disbanded in 2017 due to lineup changes, then reformed in 2022 as a studio project to record previously written material including the album "Waiting for a Better Day."

Final Fortune is a heavy metal band from Koblenz, Germany, formed in 2017. The band delivers classic heavy metal from the historic Rhineland city at the confluence of the Rhine and Moselle.

Final Warning is a heavy metal band from Athens, Greece, active since 2010 and delivering classic heavy metal from the Greek capital. The project channels the Hellenic tradition of powerful, riff-driven metal.

Fire Action is a heavy metal band from Helsinki, Finland, formed in 2018. The band plays energetic, classic-style heavy metal from the Finnish capital.

Fire Dragon is a heavy metal band from the Móra d'Ebre/Móra la Nova area of Spain, formed in 2013. The band delivers classic heavy metal from the Ebro river valley in Catalonia.

Fire Rose is a heavy metal/hard rock band from Basel, Switzerland, formed in 2015. The band delivers riff-driven heavy metal and hard rock rooted in the classic traditions of the genre.

Firebug is a heavy metal band from Huskvarna in the Smaland region, formed in 2017. They deliver classic heavy metal from the small industrial city near Jonkoping in the Swedish interior.