Gloomy Grim is a Finnish black metal and symphonic metal project started in 1995 by Agathon as a one-man band, driven by his will to make music on his own terms with primary inspiration drawn from horror film soundtracks. The project expanded to a full band, releasing albums including Blood, Monsters, Darkness, The Age of Aquarius, and Agathonomicon.

Gloomy Sunday is a sludge/doom metal band from Gothenburg, Sweden, active since 2007 and delivering nearly two decades of crushing heaviness from the Swedish metal capital. Their longevity makes them one of Gothenburg's more enduring doom acts.

Gloosh is a black metal band from Krasnoyarsk, Siberia, active since 2020 and forging cold, aggressive black metal from the banks of the Yenisei River. The project draws from the harsh Siberian climate.

Gloria Victis is a heavy metal band from Almere, formed in 2012. Their Latin name — meaning 'glory to the vanquished' — signals the noble, battle-themed character of their heavy metal from the Flevoland polder city.

Glorifiera is a raw/depressive black metal band from Malmö, Sweden, active since 2016 and channeling despair and aggression through lo-fi, emotionally charged black metal. The project explores the most sorrowful reaches of the genre.

Founded in Paris in December 2002, Glorior Belli emerged as one of France's most distinctive black metal acts, distinguished by an increasingly pronounced integration of Southern rock, blues, and doom into their sound. Early albums like Manifesting the Raging Beast on Southern Lord and Meet Us at the Southern Sign on Candlelight Records built a reputation for orthodox ferocity, while The Great Southern Darkness on Metal Blade in 2011 fully realized their swampy, genre-crossing vision. Their idiosyncratic approach to black metal remains a reference point for the genre's experimental edges.

Glorious Home is a sludge/doom metal band from Basel, Switzerland, formed in 2016, whose releases include a demo and the album Giving. They have shared stages with acts like Social Distress and Lambs on the Swiss and German live circuit.

Glory Hole is a thrash/death metal band from Vittorio Veneto in the Treviso province, active since 2012. Their provocative name belies the serious aggression of their thrash/death metal from the Veneto Prealps.

Glory Hunter is a heavy metal band in the NWOBHM tradition from Livingston in the Scottish Lowlands, active since 2012. They channel the classic spirit of British heavy metal from West Lothian.