| Acronym | Definition |
|---|
| UNDC➣National Union for Democracy in the Comoros |
| UNDC➣Utah Navajo Development Council (Bluff, UT) |
| UNDC➣United Nations Disarmament Committee (formerly Disarmament Conference) |
| UNDC➣United Nationalities Democratic Congress |
| UNDC➣Urban Neighborhood Development Corporation (Akron, OH) |