Greedkick is a progressive death metal band from Avesta, Sweden, active since 2013 and crafting ambitious, technically demanding death metal from the Dalarna iron-mining region. The project pushes death metal into progressive territory.

Green Carnation is a gothic/progressive metal band from Kristiansand, active since 2000, having evolved from early death metal origins. Led by Terje Vik Schei, they have become one of Norway's most respected progressive metal acts, with albums like Light of Day, Day of Darkness showcasing their ambitious, genre-transcending approach.

Gregor Docherty is a progressive metal/shred solo artist from Aberdeen, active since 2011. He channels technically ambitious progressive metal from northeast Scotland.

Gremio is a heavy and progressive metal band from Alcázar de San Juan in central Spain, formed in 2024, blending dense sonic textures with an experimental approach. Their sound merges heaviness with progressive ambition across genre-bending compositions.

Bratislava hard rock and progressive metal act formed in 2025, blending classic rock energy with progressive metal's structural complexity. Their dual approach draws from both accessible and cerebral musical traditions.

Grey Haven is a progressive metal band from Thessaloniki, active since 2012. Named after the Tolkien elvish port, they bring compositional sophistication to the Macedonian capital's metal scene.

Grey Owl is a progressive metal band from Ragusa in southeastern Sicily, active since 2013. They bring progressive metal ambition to one of Sicily's most architecturally stunning Baroque cities.

Grey Stag is a progressive sludge metal band from Dublin, Ireland, active since 2018 and blending the heaviness of sludge with progressive complexity and dynamic songwriting. The project channels the expansive ambition of progressive metal through a sludge-weighted lens.

Grim Shit is a progressive metal and djent project from Paris, formed in 2012. They blend technical shred guitar with progressive metalcore and djent rhythms from the French capital's eclectic heavy music scene.