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- Ganon (The Legend of Zelda)
- Ghoulies (Ghoulies film series)
- Gaap (Umineko no Naku Koro Ni)
- Cliff Ghasts (His Dark Materials)
- Gary (Andy Hamilton, Old Harry's Game BBC radio comedy)
- Glabrezu (Dungeons & Dragons fantasy game)
- The Glashan (G.P. Taylor, Shadowmancer)
- Gregor (Darren Shan, The Demonata)
- God (Silent Hill videogame series)
- Golgothan Shit Demon (Dogma)
- Gothmog (J. R. R. Tolkien's The Silmarillion)
- The Gloamglozer (The Edge Chronicles)
- Goruck, Lord of Exhaustion (Goruck)
- Gozer (Ghostbusters)
- The Griever (Darksiders)
- Griselbrand (Magic: the Gathering)
Read more about this topic: List Of Fictional Demons