| Acronym | Definition |
|---|
| UDAC➣Universal Directory Access Code |
| UDAC➣Unauthorized Disclosure Analysis Center (US DoD) |
| UDAC➣Ultra-Deepwater Advisory Committee (US Department of Energy) |
| UDAC➣Upper Dublin Aquatic Club (Pennsylvania) |
| UDAC➣Universal Directory Advertising Code |
| UDAC➣User-Directed Access Control |
| UDAC➣Universal Directory Access Code (Yellow Pages ad size code) |
| UDAC➣Uniform Distribution & Accreditation Centre (established for the Sydney 2000 Olympics) |