| Designer | # Fonts |
|---|---|
| Only Fonts | 2 |
| onlygfxcom | 1 |
| Onne Hermawan | 1 |
| Onno | 1 |
| ony studio | solutype | 6 |
| Onyx Font Foundry | 10 |
| Oo Yi Lo | 1 |
| orakeldel | 1 |
| orange modern | 1 |
| orchstrdsgn | 1 |
| Oren next friend | 1 |
| Oren Watson | 1 |
| Oreovocado | 2 |
| Orgdot | 9 |
| 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 |
| Oto Sticker | 1 |
| Otto Lerma | 1 |
| Otto Maurer Design | 6 |
| ouf-ouf | 1 |
| Our House Graphics (OHG) | 1 |
| out | 1 |
| Out of Step Font Company | 28 |
| Ovalum | 1 |
| ovoz | 1 |
| Owen Ingarfield | 1 |
| Owen Turley | 1 |
| Ozgu Uzun | 1 |
| Özgür Özserin | 1 |
| Ozmee | 3 |
| Ozza88 | 1 |
| p joks | 5 |
| P Mdz | 2 |
| P. Brigham | 1 |
| P.Finch | 2 |
| P22 | 1 |
| p4r4d0x | 1 |
| P66 Fontry | 1 |
| Pabasar S | 1 |
| Pablo Barrio | 1 |
| Pablo Caro | 2 |
| Pablo Díaz Redondo | 1 |
