| O'brien, C. (1) | O'brien, J. (1) | Office on the Status of Disabled Persons, South Africa (1) |
| Öhlén, B. (4) | Oka, Y. (1) | Oldenkamp, I (1) |
| Oliver, M. (1) | Opitz, C. (1) | Örnhall, H. (1) |
| Orylski, L. (1) | Osterwitz, I. (2) | O´Day, B. (2) |
Promoting the self-determination of people with disabilities