| Obermeier, Siegfried |
| O'Brian, Patrick |
| O´Connor, Joseph |
| Oelker, Petra |
| Ohff, Heinz |
| Okuizumi, Hikura |
| Olaizola, José Luis |
| Ompteda, Georg Freiherr
von |
| Orringer, Julie |
| Ortheil, Hanns-Josef |
| Ortoli, Sven |
| Orwell, George |
| Ossowski, Leonie |
| Otto, Eduard |
|
Ovejero, José
|
