| Acronym | Definition |
|---|
| DUP | Democratic Unionist Party (Northern Ireland) |
| DUP | Duplicate |
| DUP | Délégation Unique du Personnel (French: Delegation of Unique Personnel) |
| DUP | Déclaration d'Utilité Publique (French: Declaration of Public Utility) |
| DUP | Dances of Universal Peace |
| DUP | Department of Unified Protection (gaming) |
| DUP | Direction de l'Urbanisme et des Paysages (French: Directorate of Urban Planning and Landscape) |
| DUP | Delft University Press (Netherlands) |
| DUP | Dump Utility Program |
| DUP | Dialup Networking Profile |
| DUP | Dynamic Update |
| DUP | Dell Update Package |
| DUP | Disk Update |
| DUP | Dial up Port |
| DUP | Dial up |
| DUP | Data User Part |
| DUP | Data Update Propagation |
| DUP | Daughters of Utah Pioneers |
| DUP | Duration of Untreated Psychosis |
| DUP | Data User Part (SS7) |
| DUP | Diundecyl Phthalate (chemical) |
| DUP | Druck Und Papier (German) |
| DUP | Duplicate Policy (insurance) |
| DUP | Deed under Power of Sale (real estate; Georgia) |
| DUP | Depot Utilization Plan |
| DUP | Definition-Use Pair |