| Link | Location |
|---|
| Miriam Orejana | Madrid, Spain |
| Diego Oreona | A Coruña, Spain |
| Shawna Organisciak | Denver, Colorado, United States of America |
| Cherukei Orianwo | London, United Kingdom of Great Britain and Northern Ireland |
| Vadim Orlov | Moscow, Russian Federation |
| Dominic Orme | Burgess Hill, United Kingdom of Great Britain and Northern Ireland |
| Ryan Orndorf | Minneapolis-United Health, Minnesota, United States of America |
| Christoph Ornth | München, Germany |
| Veruska Oropeza | San Francisco, California, United States of America |
| Erich Orozco | Atlanta, Georgia, United States of America |
| Tracy Orrison | Washington D.C., , United States of America |
| Ronald Orsi | New York, New York, United States of America |
| Liz Orsini | Minneapolis-Optum & United Health, Minnesota, United States of America |
| Andrea Ortalda | Ubtershcleissheim, Germany |
| Stefano Ortalda | Turin, Italy |
