| Author | Titles | | 1.
| Okeke-Agulu, Chika 1966- | 1 | | 2.
| Okereke, Emeka, 1980- | 1 | | 3.
| Okinczyc, Andrzej, 1949- | 1 | | 4.
| Okón, Waldemar | 1 | | 5.
| Okon, Yoshua, 1970- | 3 | | 6.
| Okorn, Ziga | 1 | | 7.
| Ökra (nome de artista) | 1 | | 8.
| Ok-RM (Firma de design) | 2 | | 9.
| Öktem, Estra Sarigedik | 1 | | 10.
| Okuda, Seiichi | 1 |
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