| John Pickford | Developer | |
| John Pineapple | Developer | |
| John Poje | Developer | |
| John Pragnell | Developer | |
| John Prince | Developer | |
| John Puleio | Developer | |
| John R. Harness | Developer | |
| John R. Saunders | Developer | |
| John Rajczyba | Developer | |
| John Rausch | Developer | |
| John Retroreloader @ Return learn games | Developer | |
| John Robinson | Developer | |
| John Romero | Developer | |
| John Sebok | Developer | |
| John Sessoms | Developer | |
| John Shramko | Developer | |
| John Silva | Developer | |
| John Spencer | Developer | |
| John Stanley | Developer | |
| John Suave | Developer | |
| John Tatlock | Developer | |
| John Vanderhoef | Developer | |
| John W. Ratcliff | Developer | |
| John Watson | Developer | |
| John White | Developer | |
| John Wildsmith | Developer | |
| John de Salis | Developer | |
| John's Emazing Films | Developer | |
| John-Evans Wagenaar | Developer | |
| John-Games | Developer | |
| John.Dunning | Developer | |
| John32B | Developer | |
| JohnAD | Developer | |
| JohnArr | Developer | |
| JohnDoeNews | Developer | |
| JohnEffKernedy | Developer | |
| JohnGabrielUK | Developer | |
| JohnLee Cooper | Developer | |
| JohnPowow | Developer | |
| JohnRosato | Developer | |
| John_ng | Developer | |
| Johnatan De Lazzari | Developer | |
| Johnjaylayn | Developer | |
| Johnny | Developer | |
| Johnny Dalvi | Developer | |
| Johnny Ginard | Developer | |
| Johnny Ostad | DeveloperPublisher | |
| Johnny Puskar | Developer | |
| Johnny Zhonghao Liang | Developer | |
| JohnnyBiff | Developer | |