Linköping-based progressive sludge metal outfit formed in 2014, merging the crushing weight of sludge with progressive rock's structural ambition. Their expansive compositions push beyond conventional heaviness into territory that rewards patient listening.

Groak is a sludge/doom metal band from Leeds, formed in 2015. Their name — an archaic British dialect word meaning to stare silently — matches the brooding, oppressive weight of their sludge doom from West Yorkshire.

Groan is a stoner metal band from London, active since 2010. They deliver heavy, groove-laden stoner metal from the British capital.

Groaned Cold is a black metal project from the Skopje/Kriva Palanka area, formed in 2014. They deliver atmospheric black metal from northeastern North Macedonia.

Grob is a thrash/black metal band from the Split/Zrnovnica area of Dalmatia, formed in 2021. They merge thrash aggression with black metal darkness from the Croatian coast.

Grobnitsa is a Czech black metal duo from Most, formed in 2020 by Erlik (vocals/guitar) and Avaddon (bass/drums), self-described as making "dark and evil music." Their releases include the Rotten Funeral EP, channeling raw, unpolished black metal from the industrial city of Most.

Grobut Neerg is a death/folk metal band from Ryazan, Russia, active since 2018 and fusing death metal brutality with folk metal's traditional instrumentation. The project merges ancient and extreme traditions.

Grobych is an instrumental post-metal project from Minsk, Belarus, formed in 2016, whose 2016 debut Fall in Closure consists of five atmospheric, guitar-driven tracks spanning twenty-nine minutes. The project favors wordless, mood-driven compositions that blend metal weight with ambient textures.

Grock is a heavy metal and hard rock band from Bilina, Czech Republic, formed in 2021, working in the tradition of classic hard rock-inflected heavy metal. The band brings a straightforward, riff-driven approach to the Czech metal scene.