| Abbreviation | Definition |
|---|---|
| UNDF | United Nations Detention Facility |
| UNDF | United Nations Development Fund |
| UNDG | United Nations Development Group |
| UNDGO | United Nations Development Group Office |
| UNDGP | United Nations Dangerous Goods Panel |
| UNDI | United Nations Document Index |
| UNDMT | United Nations Disaster Management Teams |
| UNDO | United Nations Development Organization |
| UNDOF | nited Nations Disengagement Observer Force |
| UNDOF | United Nations Disengagement And Observer Force |
| UNDOF | United Nations Disengagement Observer Force |
| UNDP | United Nations |
| UNDP | United Nations Development Programme |
| UNDPKO | United Nations Department For Peace Keeping Operations |
| UNDRIP | United Nations Declaration on the Rights of Indigenous Peoples |
| UNDRO | United Nations Drought Response Organization |
| UNDSS | United Nations Department of Safety and Security |
| UNDT | United Nations Dispute Tribunal |
| UNEA | United Nations Environment Assembly |
| UNECA | United Nations Economic Commission for Africa |