Gnaargakh is a German black metal project formed in 2020, with an extensive catalog of solo and collaborative releases including splits with Graf and Incestum. Their releases Erzleichnam, Schmerzend Seelenfeuer, and Zhymorkh explore dark, occult territory with German-language titles reflecting themes of soulfire and cosmic calamity.

Gnadenthron is a German viking/black metal project formed in 2024, whose name translates to "throne of mercy." The project blends Norse-themed viking metal with black metal aggression.

Gnarled Hands is a blackened death metal project from Scotland, formed in 2025. They bring punishing blackened death metal to the Scottish extreme underground.

Gnarparfarlen is a German black metal and grindcore project active since 2009, fusing the tremolo-picked fury of black metal with grindcore's chaotic brevity. The project operates at the volatile intersection of two of extreme metal's most intense subgenres.

Gnaw Their Tongues is a black metal/noise/experimental project from Smallingerland in Friesland, active since 1991. Over three decades of horrifying, boundary-obliterating music that fuses black metal with harsh noise, industrial, and dark ambient have made sole creator Maurice de Jong one of the most singular figures in extreme music worldwide.

Gneterswart is a German black metal project active since 1997, making it one of the longer-running underground black metal acts in the country. The project has maintained nearly three decades of commitment to the genre.

Gnieu is a Belarusian black metal solo project by Draconis, based in Grodno and formed in 2022, with all music, lyrics, and performance handled by a single creator alongside session drums. Their releases include Konsylium Oprawcow (2022) and the 2024 split Antidotum na zycie with Actum Inferni, limited to 666 hand-numbered copies.

Gniew is a black metal project from Olsztyn in the Warmia-Masuria region, formed in 2022. Their name — Polish for 'wrath' — encapsulates the fury of their black metal from northeastern Poland.

Gnipaheller is a Viking black metal project from Stavanger, formed in 2017. Named after the cave guarding the realm of the dead in Norse mythology, they deliver Viking-themed black metal from the Rogaland coast.