Black metal project split between Koper, Izola, and Portoroz on Slovenia's Adriatic coast, active since 2015. Their Mediterranean origins lend an unusual geographic context to their dark and aggressive sound.

Grimoire de Occulte is a death/doom/drone metal project from Ubach-Palenberg, Germany, formed in 2011, evolving from early drone and ambient work into a heavier death/doom sound. The project's name references an occult book of spells, reflecting its dark, ritualistic thematic focus.

Grimorc is a black metal project from Huittinen, Finland, formed in 2017, delivering dark and hostile black metal rooted in the Finnish tradition. Their sound embraces the cold, aggressive aesthetic central to Nordic black metal.

Grimoria is a black metal band from Toulouse, France, formed in 2023 and evolving toward death/black metal. They represent the newest wave of Toulouse's expanding extreme metal underground.

Grimorio is a gothic/heavy metal band from Catania, Sicily, formed in 2025. Their Italian name — meaning 'grimoire' or spell book — signals the occult atmosphere of their gothic metal from the foot of Mount Etna.

Grimorium is a doom metal band from Wrexham in North Wales, active since 2007. They deliver heavy doom from the Welsh-English border region.

Grimorium Verum is a death/thrash metal band from Smederevska Palanka, Serbia, active since 2007. Named after an 18th-century grimoire, they merge occult themes with aggressive riffing.

Grimorte is a black/doom metal project from England, formed in 2020. They merge black metal darkness with doom metal's crushing pace from the English underground.

Grimpen Mire is a sludge/doom metal band from Birmingham, active since 2012. Named after the treacherous bog in Sherlock Holmes' The Hound of the Baskervilles, they deliver swamp-heavy sludge doom from England's second city.