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| — G — |
| Daniel G. S. | Cruz Gabaldón | Neil Gaiman | Raúl Galache | Víctor M. Gallardo |
| Eduardo Gallego | Laura Gallego | Raymond Z. Gallun | Arnould Galopin | Daniel F. Galouye |
| David Gambero | Francisco José Gamiz | Kerry Gammil | Elvio E. Gandolfo | Antoni Garcés |
| Enrique Garcés | José Luis Garci | Abraham García | Adolfina García | Guillermo Osvaldo García |
| Luis Eduardo García | P. García | Pedro M. García | Santiago García | Santiago García Albás |
| Roberto García Álvarez | Miguel Ángel García Argüez | Pedro Alberto García Bilbao | Lamberto García del Cid | Carlos García Gual |
| Juan Carlos García Herranz | Luis García Jambrina | José Luis García López | Federico García Lorca | Pablo García Maeso |
| Gabriel García Márquez | Pedro Pablo García May | Vicente García Oliva | Francisco García Pavón | Omar García Ramírez |
| José Luis García Remiro | R. García Robertson | Beatriz García Sánchez | Eduardo García Sánchez | Santiago García Solans |
| Luisa María García Velasco | R. García y Robertson | Alberto García-Teresa | Jorge Gard | Carlos Gardini |
| Erle Stanley Gardner | John Gardner | Martin Gardner | Juan de Dios Garduño | Randall Garrett |
| Enrique Gaspar | Jean Gattégno | Chester S. Geier | Hugo Gernsback | David Gerrold |
| William Gibson | Alfonso José Gijón Morales | Rodolfo Gil | Lorena Gil Rey | Carlos Giménez |
| Eduardo Abel Giménez | Pilar Giralt | Alice Glaser | Donald F. Glut | Stephen Goldin |
| William Goldman | Lisa Goldstein | Eduardo Goligorsky | Dardo Gómez | Héctor Gómez |
| Salvador Patricio Gómez | Luis Gómez García | Juan Diego Gómez Vélez | José Manuel Gómez-Pastrana López | Isa J. González |
| Ismael González | José Luis González | Mariela González | Luis González Baixauli | José Antonio González Castro |
| Ana González Duque | Maielis González Fernández | Alejandro González Gómez | Antonio González Mesa | Juan González Mesa |
| Fabricio González Neira | Raquel González Osende | Raúl Gonzálvez del Águila | William D. Goodrich | Kathleen Ann Goonan |
| Gennadiy Gor | Alexander Gorbovsky | Joe Gores | Angélica Gorodischer | Phyllis Gottieb |
| Ron Goulart | Luis Goytisolo | David Graeber | Marco Granado | Paula Grañeda |
| Robert Graves | Charles O. Gray | Graham Greene | Zane Grey | George Griffit |
| Daniel Grotta | Ángel Guardiola Gómez | María Guéra | Eva Guerrero | C. Guerrero Escalona |
| Eugeni Guillem | Juan Guinot | James Gunn | Georgij Gurevic |
