| Abbreviation | Definition |
|---|---|
| UDIA | Urban Development Institute of Australia |
| UDIA | Utah Division of Indian Affairs |
| UDLC | Unified Development Land Code |
| UDLP | Ultimate Destination: Lower Pennsylvania |
| UDO | Unified Development Ordinance |
| UDVC | Utah Domestic Violence Coalition |
| UDX | National Weather Service Rapid City, South Dakota, NEXRAD radar site |
| UEF | Uninsured Employers Fund |
| UEL | United Empire Loyalists |
| UES | United Engineering Society |
| UFPO | Underground Facilities Protection Organization |
| UGA | Urban Growth Area |
| UGL | Upper Greenwood Lake |
| UH | Union Hill |
| UHI | Urban Health Initiative |
| UJP | Urban Johannesburg Project |
| UKBG | United Kingdom Bartenders Guide |
| UL | Universal Life |
| ULB | Urban Local Bodies |
| ULCT | Utah League of Cities and towns |