| Abbreviation | Definition |
|---|---|
| NIDS | National Income Dynamics Study |
| NIGGER | A racial slur to African-Americans/black/negro |
| NIR | National Institute Research (National Institute of Development, Research, and Documentation) |
| NISER | National Institute for Social and Economic Research |
| NIWA | Namibian Information Workers' Association |
| NLDTF | National Lottery Distribution Trust Fund |
| NMCP | National Malaria Control Programme |
| NOCSA | National Olympic Committee of South Africa |
| NOGAMU | National Organic Agriculture Movement of Uganda |
| NOIK | Nederlandse Oos-Indiese Kompanjie |
| NP | National Party |
| NPSA | National Party South Africa |
| NRANC | Northern Rhodesia African National Congress |
| NRANC | Northern Rhodesian African National Congress |
| NRP | New Republic Party |
| NSBE | National Society of Black Engineers |
| NSC | National Senior Certificate |
| NSSCA | National Students Support Council for Africa |
| NTBF | Nouvelles Technologies Burkina Faso |
| NTDS | Neglected Tropical Diseases |