Grox is a project from Veszprém, Hungary, that evolved from ambient origins in 2012 into black metal territory, tracing an arc from ethereal atmospherics to aggressive extremity. The project's genre evolution reflects a restless creative spirit.

Groza is a black metal band from Muhldorf am Inn, Germany, formed in 2018, whose name means "thunderstorm" in several Slavic languages. The band has established themselves as a notable act in the Bavarian black metal scene.

Grozeth Nebulae is a black metal project from Fabbrico in the Reggio Emilia province, active since 2008, later incorporating vaporwave elements. Their genre-blending evolution makes them one of the more unusual acts in the Italian extreme underground.

Grozno is a black metal band from Ryazan, Russia, active since 2012 and forging over a decade of dark extremity from central Russia. The project channels the atmospheric intensity of black metal.

Grrrmba is a blackened doom/sludge metal band from Budapest, Hungary, formed in 2016 by members of Jack, Long Pig, My First Knife, and other Hungarian bands. Their releases include Imminent, Coalescence, Embodiment, and a split with Boru.

Grudzień is a Polish black metal project formed in 2025, whose name means "December" in Polish, channeling the cold and darkness of the year's final month through raw black metal. The project emerges from the newest wave of Polish black metal.

Grunleggender is an atmospheric black metal project from High Peak in Derbyshire, formed in 2023. Their Norwegian-derived name and Peak District setting inform atmospheric black metal drawn from the moorland landscapes of northern England.

Gruntlos is a black metal project from Hamburg, Germany, formed in 2022, whose name roughly translates to "without reason" in German. The project channels nihilistic black metal from the Hanseatic port city.

Grusig is a black metal project from Bern, Switzerland, formed in 2019 by members of Chotza, blending black metal with Swiss German dialect lyrics and regional folk traditions they call "black n blues" and "black n roll." Their 2019 debut Dr Ahfang vor Misaara was released through Northern Fog Records Germany and guides listeners through atmospheric sound fields rooted in local history.