| # | Nom |
|---|---|
| 1 | O'Neill, Simon |
| 2 | O'Rourke, Miceál |
| 3 | Obrecht, Jacob |
| 4 | Obrovská, Jana |
| 5 | Ockeghem, Johannes |
| 6 | Odstrcil, Karel |
| 7 | Oelze, Christiane |
| 8 | Offenbach, Jacques |
| 9 | Ohana, Maurice |
| 10 | Ohlsson, Garrick |
| 11 | Óistrakh, David |
| 12 | Olivé, Josep-Ramon |
| 13 | Olsson, Otto |
| 14 | Önder, Ferhan |
| 15 | Önder, Ferzan |
| 16 | Ono, Kazushi |
| 17 | Onofri, Enrico |
| 18 | Onslow, Georges |
| 19 | Oostrum, Johanni van |
| 20 | Opolais, Kristine |
| 21 | Oramo, Sakari |
| 22 | Orciuolo, Elio |
| 23 | Oren, Daniel |
| 24 | Orendt, Gyula |
| 25 | Orff, Carl |
| 26 | Orlinski, Jakub Józef |
| 27 | Ormandy, Eugene |
| 28 | Oropesa, Lisette |
| 29 | Orozco-Estrada, Andrés |
| 30 | Orthel, Leon |
| 31 | Osborn, John |
| 32 | Osborne, Steven |
| 33 | Oskarsson, Gudjón |
| 34 | Ostrovsky, Sergey |
| 35 | Otter, Anne Sofie von |
| 36 | Otterloo, Willem van |
| 37 | Otto, Luigi |
| 38 | Oue, Eiji |
| 39 | Oustrac, Stéphanie d' |
| 40 | Outram, Rebecca |
| 41 | Ovenden, Jeremy |
| 42 | Ovette, Ericka |
| 43 | Ovrutsky, Mikhail |
| 44 | Ozawa, Seiji |
