| Acronym | Definition |
|---|
| UDB➣Universal Database (IBM) |
| UDB➣Urban Development Boundary |
| UDB➣Uniqueness Data Base |
| UDB➣Universal Data Base |
| UDB➣User Data Base |
| UDB➣Ultimate Data Base |
| UDB➣Update Data Base |
| UDB➣Unquiet Data Base |
| UDB➣User Behavioral Database |
| UDB➣Union Démocratique Bretonne (French: Breton Democratic Union; political party; France) |
| UDB➣Universal Desktop Box (computing) |
| UDB➣Update Buffer |
| UDB➣Unified Data Base |
| UDB➣Union des Designers de Belgique (French: Union of Designers of Belgium) |
| UDB➣Uprava Drzavne Bezbednosti (State Security Committee, Yugoslav) |