Fading Waves is a progressive sludge/post-metal band from Rostov-on-Don in southern Russia, active since 2011. Over a decade they have developed a sophisticated approach to atmospheric heavy music, blending sludge weight with post-metal dynamics from the Don River metropolis.

Fall of Efrafa is a sludge/post-metal/crust band from Brighton, England. Named after a warren from Richard Adams' "Watership Down," the band creates politically charged sludge and post-metal.

Fall Time. is a post-metal and sludge metal band from Vienna, Austria. Their music draws on the slow, crushing heaviness and abrasive textures characteristic of the sludge and post-metal tradition, building long-form compositions that shift between dense, distorted passages and quieter atmospheric sections.

Falling Giants is a stoner/sludge/doom band from Ancona, Italy, self-described as 'filthy stoner sludge.' Their 2023 debut Whirlwind Hymns sprawls across seven tracks of low-tuned, atmospheric heaviness, with songs regularly stretching past ten minutes into droning, meditative territory.

Fange is an industrial sludge/death metal band from Rennes, France, formed in 2014. The band merges industrial noise, sludge metal's abrasion, and death metal's heaviness from the Breton capital.

Fantom Blood is a sludge/doom metal project from Kozani, Greece, emerging in 2025 with heavy, crushing doom from the mountainous region of Western Macedonia. The project delivers punishing sludge and doom from one of Greece's most remote metal scenes.

Farer is an atmospheric sludge/post-metal band split between Groningen and Utrecht in the Netherlands, formed in 2021. They blend the crushing weight of sludge with the expansive dynamics of post-metal, creating atmospheric heaviness shaped by the Dutch lowland landscape.

Fashion Killers is a death/sludge metal band from Essen, Germany, formed in 2019. The band merges the brutality of death metal with the thick, low-end heaviness of sludge from the industrial Ruhr city.

Fathom is a doom/sludge metal band from Amsterdam, formed in 2018. They plumb the depths suggested by their name, delivering heavy, oppressive doom and sludge from the Dutch capital's thriving underground metal scene.