| Abbreviation | Definition |
|---|---|
| OSAM | Oregon Society of Association Management |
| OSAS | Ontario Standardbred Adoption Society |
| OSDS | Oregon Sheep Dog Society |
| OSE | ??????? ??????? ??????? |
| OSE | 'D,E9J) 'D1E/J) 'DE51J) |
| OSE | Oman Society of Engineers |
| OSE | Ophthalmological Society of Egypt |
| OSHE | Oregon Society for Healthcare Engineering |
| OSHE | Oregon Society of Healthcare Executives |
| OSIF | Okanagan Society of Independent Filmmakers |
| OSIF | Okanagan Society of Independent Filmmaking |
| OSIG | Organisation Suisse pour l'Information Géographique |
| OSIG | Organisation Suisse pour l'Information Gographique |
| OSIG | Organizzazione Svizzera per l'Informazione Geografica |
| OSIG | Schweizerische Organisation fr Geo-Information |
| OSIG | Schweizerische Organisation für Geo-Information |
| OSIG | Swiss Organisation for Geographic Information |
| OSIM | Open Society Institute Macedonia |
| OSIWA | Open Society Initiative for West Africa |
| OSIWA | Open Society Initiative for Western Africa |