- Neil Gaiman
- Dave Galanter
- Diana G. Gallagher
- Nicole Galland
- Mark A. Garland
- W. Michael Gear
- David Gerrold
- Gary Gibson
- William Gibson
- Scott G. Gier
- Mel Gilden
- Dmitry Glukhovsky
- Donald F. Glut
- Christie Golden
- Christopher Golden
- Tony Gonzales
- Al Gore
- Julian Gough
- David S. Goyer
- Alena Graedon
- L. A. Graf
- Seth Grahame-Smith
- Rob Grant
- Claudia Gray
- Robert Greenberger
- Colin Greenland
- S.L. Grey
- Ken Grimwood
- Jeff Grubb
- Michael Grumley