UDW
| Acronym | Definition |
|---|---|
| UDW | User Data Words |
| UDW | User Defined Word |
| UDW | University of Durban-Westville (South Africa) |
| UDW | United Domestic Workers (est. 1979; San Diego, CA) |
| UDW | Ultra Deep Water (drilling) |
| UDW | Upside Down World (online political magazine; Latin America; est. 2003) |
| UDW | User Data Word |
| UDW | United Death Warriors (gaming clan) |
| UDW | United Destroyers of War (gaming clan) |