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.

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

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.

Grimsrud is a doom/stoner/sludge metal band from Salford in Greater Manchester, formed in 2025. Named after the Fargo character, they deliver heavy stoner doom from the Manchester conurbation.

Grip is a doom and stoner metal band from Reus in Catalonia, Spain, formed in 2019, delivering heavy, fuzz-drenched riffs rooted in the low and slow tradition. Their sound draws on the weighty, groove-laden side of the stoner-doom spectrum.

Groak is a sludge/doom metal band from Leeds, formed in 2015. Their name — an archaic British dialect word meaning to stare silently — matches the brooding, oppressive weight of their sludge doom from West Yorkshire.

Groundsleeper are a black/doom metal band from Ried im Innkreis in Upper Austria, active in the regional underground metal scene. The band operates as an independent four-piece and has maintained a presence primarily through local and Austrian metal circuits.

Growing Horns is a doom/sludge metal band from Kortrijk, Belgium, formed in 2019, whose debut The Nobility of Pain (2019) and follow-up The Essence of Suffering (2025) deal in crushing, emotionally raw doom with bestial and mournful vocal textures. The Essence of Suffering was pressed on limited 180-gram vinyl at Dunk! pressing.