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