| Designer | # Fonts |
|---|---|
| Omar the Radwan | 6 |
| omar220783 | 1 |
| OmART | 2 |
| Ombra | 1 |
| Omega Design | 1 |
| Omega Font Labs | 45 |
| Omega Groundon | 1 |
| OmegaPC777 | 1 |
| Omen Type | 4 |
| Omer KOSE | 1 |
| Ominous Cat | 1 |
| omoriley | 1 |
| Omotu | 10 |
| Omotu Studio | 3 |
| One by Four | 2 |
| One Design | 37 |
| One Hit Combo | 1 |
| onezero | 12 |
| ONG Type | 42 |
| Only Fonts | 3 |
| onlyfontyouandme | 2 |
| onlygfxcom | 1 |
| Onne Hermawan | 1 |
| Onno | 2 |
| ony studio | solutype | 6 |
| Onyx Font Foundry | 10 |
| Oo Yi Lo | 1 |
| orakeldel | 1 |
| orange modern | 1 |
| OrangePewPew | 2 |
| orchstrdsgn | 1 |
| Oren next friend | 1 |
| Oren Watson | 1 |
| Oreovocado | 2 |
| Orgdot | 9 |
| Origin Type | 27 |
| Orland Marín | 1 |
| Ornez | 3 |
| Osama El Khalfaoui | 1 |
| Oscar Barda | 1 |
| Oscar Maynard | 1 |
| Oscar Rubio | 1 |
| oserone | 1 |
| Oshi Deviani | 1 |
| Osman Aktaş | 3 |
| Ossok | 1 |
| Othyllia Maisonnave | 1 |
| Oto Sticker | 1 |
| Otto Lerma | 1 |
| Otto Maurer Design | 6 |
