| Abbreviation | Definition |
|---|---|
| NTF | Nigeria Trust Fund |
| NTZ | Northern Tanzania |
| NUMSA | National Union of Metalworkers of South African |
| NURCHA | National Urban Reconstruction and Housing Agency |
| NUSAS | Nasionale Unie van Suid-Afrikaanse Studente |
| NWA | North West Africa |
| NWG | Namibische Wissenschaftliche Gesellschaft |
| NWV | Namibië Wetenskaplike Vereniging |
| NYASA | New York African Studies Association |
| NYS | Na You Sabi |
| NZAV | Nederlandsch Zuid-Afrikaansche Vereeniging |
| OAA | Office on African Affairs |
| OABD | Organisation for African Business Development |
| OAC | Organization for African Community |
| OACL | Ocean Africa Container Line |
| OAE | Organisasie vir Afrika-Eenheid |
| OATC | Offshore Africa Training Centre |
| OATUU | Organization of African Trade Union Unity |
| OAU | Organisation of African Unity |
| OAU | Organization for African Unity |