2010 Winter Olympische Spelen - Atleten
| Atleet | Sport |
|---|---|
 Shane O'Connor | Skiing |
 Tadashi Obara | Schaatsen |
 Karin Oberhofer | Biatlon |
| Christian Oberstolz | Rodelen |
 Elli Ochowicz | Schaatsen |
 Pierre Ochs | Skiing |
| Nobunari Oda | Schaatsen |
 Thijsje Oenema | Schaatsen |
 Manfred Oettl Reyes | Skiing |
| Ornella Oettl Reyes | Skiing |
 Katrin Ofner | Skiing |
 Sabahattin Oglago | Skiing |
| Takako Oguchi | Rodelen |
| Apolo Anton Ohno | Schaatsen |
| Yuya Oikawa | Schaatsen |
 Triin Ojaste | Skiing |
| Rana Okada | Skiing |
| Tomomi Okazaki | Schaatsen |
 Helene Olafsen | Skiing |
 Harri Olli | Skiing |
 Anna Carin Olofsson | Biatlon |
| Justin Olsen | Bobsleigh |
| Johan Olsson | Skiing |
| Hans Olsson | Skiing |
 Steve Omischl | Skiing |