Ganesha is a southern metal band from Barcelona, Spain, formed in 2010, named after the Hindu elephant-headed god of beginnings. The band channels southern-fried swagger and heavy grooves from the Catalan capital.

Gangrena is a black/speed metal band from Vilnius, Lithuania, formed in 2016. They fuse black metal with speed metal velocity from the Baltic capital.

Gangrenectomy is a slam/brutal death metal band from Catania, Sicily, formed in 2017. They deliver the guttural heaviness of slam death metal from the foot of Mount Etna.

Gangrened is a doom and sludge metal band from Kokkola, Finland, active since 2013, creating 'heavy, noisy, avant-garde and atmospheric sounds' that blur the lines between doom, ambient, and noise. Their releases include Ambient Doom Dream, We Are Nothing, and a split with Hipoxia, reflecting an experimental and genre-defying approach to extreme heaviness.

Gangrenomity is a brutal death metal act from Bellinzona in the Italian-speaking Ticino region of Switzerland, formed in 2014 with members from Insomnia Isterica. Their 2014 demo was a raw, DIY recording with drums captured in a single take and no triggers, yielding three tracks of slamming brutality.

Ganjubatronic is a sludge/drone/doom metal band from Warsaw, formed in 2023. They deliver crushing, slow-motion heaviness from the Polish capital.

Ganondorf is a black metal project from Nulvi in the Sassari province of Sardinia, formed in 2019. Named after the villain of the Legend of Zelda, they channel black metal from one of Sardinia's most remote northern villages.

Gaoth is a one-person atmospheric and post-black metal project from Wexford, Ireland, created entirely by sole member F.S. since 2016. The project's two albums, Dying Season's Glory (2016) and The Obsidian Dialogue (2021), span over seventy minutes of cosmic, transcendent black metal blending folk, neofolk, and progressive elements.

Gar Bigoru is a thrash metal band from Poland, formed in 2021. They deliver aggressive thrash from the Polish underground.