| Graeme Devine | Developer | |
| Graeme Lennon | Developer | |
| Graeme1995 | Developer | |
| Graffiti | Developer | |
| Graffiti Entertainment | Publisher | |
| Graffiti Games | DeveloperPublisher | |
| Graffiti_Games | Developer | |
| Graftgold | Developer | |
| Graftgold (David O'Conner, John Cumming) | Developer | |
| Graftgold (David O'Connor) | Developer | |
| Graftgold (Dominic Robinson, John Cumming, Steve Turner) | Developer | |
| Graftgold (Steve Turner) | Developer | |
| Graftgold (Steve Turner, John Cumming, Jason Page) | Developer | |
| GrafxKid | Developer | |
| Graham | Developer | |
| Graham Axten | Developer | |
| Graham Blighe | Developer | |
| Graham Cluley | Developer | |
| Graham Dolle | Developer | |
| Graham Lilley | Developer | |
| Graham Nelson | Developer | |
| Graham Stafford | Developer | |
| Graham Weldon | Developer | |
| Graham Wiebe | Developer | |
| GrahamtheGrim | Developer | |
| GrahfMetal | Developer | |
| Gram Nitschke | Developer | |
| GramOner | Developer | |
| Grame Studios | Developer | |
| Granada | Developer | |
| Grand Dog Studio | Developer | |
| Grand Prix Games | Developer | |
| Grand Productions | Publisher | |
| GrandInquisitor | Developer | |
| Grande Games | DeveloperPublisher | |
| Grande de Muza Games | Developer | |
| Grandprix Inc. | Developer | |
| Grandslam | Publisher | |
| Grandslam Entertainment | Publisher | |
| Grandslam Entertainments | DeveloperPublisher | |
| Grandslam Interactive | Publisher | |
| Grandslam Video | Publisher | |
| Grandslam Video Ltd. | Publisher | |
| Granite Bay Software | Developer | |
| Granja Studios | Developer | |
| Grant Doney | Developer | |
| Grant Jaquest | Developer | |
| Grant Ojanen's Creations | Developer | |
| Grant Wang | Developer | |
| Grant Worsfold | Developer | |