Participants
| Kayode Olawoyin | Nigeria |
| Teresa A. Oliveira | Portugal |
| Adebayo Olukoshi | Nigeria |
| Dickens Ondigo | Kenya |
| Mung-i Eunice Ong | France |
| H.E. Hikariko Ono | Japan |
| Justina Onumah | Ghana |
| Rowland Opisa | Kenya |
| Leonardo Orlando | Spain |
| Ferenc Orosz | Hungary |
| Eduardo Ortega Barria | Panama |
| Azeez Oseni | Nigeria |
| Hossam Eldin Osman | Egypt |
| David Ouko | Kenya |
| Daniela Ovadia | Italy |
| Nurul Hasnat Ove | Bangladesh |
| Walter Oyawa | Kenya |
| Isaac Oyekola | Nigeria |
| F. Esin Özalp Öztürk | Turkey |
| Csaba Pál | Hungary |
| Ms Sheena Joy Palcis | Philippines |
| József Pálinkás | Hungary |
| Thilini Palliya Guruge | Sri Lanka |
| Ganesh Pandey | Nepal |
| Ganesh Pandey | Nepal |
| Tijana Panic | Serbia |
| Judit Panyik | Hungary |