Gilgamesj is a heavy metal band from Leerdam in South Holland, formed in 2016. Named after the ancient Sumerian king, they deliver epic heavy metal from the Dutch river country.

Gilgamosh are a death/thrash metal band formed in 2023 from St. Pölten and Vienna, Austria, representing a newer entry in the country's active extreme metal underground. They operate independently and have been building their catalog and live presence since their formation.

Giliath is a black metal project from Bari in Puglia, formed in 2023. They channel black metal from the capital of Italy's Adriatic south.

Giljotin is an industrial black metal project from Norway, formed in 2015. They merge industrial textures with black metal hostility.

Gilles de Rais is a black metal project from Munster, Germany, formed in 2019, named after the infamous 15th-century French serial killer and Jeanne d'Arc companion. Their 2019 release Homicide features three tracks of depressive, raw black metal exploring themes of violence and despair.

Gilotyna is a thrash metal band from Gliwice in Upper Silesia, formed in 2022. Their Polish name — meaning 'guillotine' — captures the sharp, cutting character of their thrash from the industrial south.

Gimbatul is a German black metal solo project from Ulm, created by Dagalur, whose releases include Dornenwald and When Silence Devours the Light. The project draws its name from Tolkien's Black Speech, channeling atmospheric darkness through a single creative vision.

Gimcrack is a groove metal and hardcore band from Kiel, Germany, formed in 2013, delivering heavy, rhythmic metal from Germany's Baltic coast. The band combines groove metal's percussive riffing with hardcore punk's raw energy.

Gimhell is a heavy metal band from Umeå, Sweden, formed in 2022 and delivering classic heavy metal from northern Sweden. The project channels the timeless power of traditional metal riffage.