| Acronym | Definition |
|---|
| DCU | DC Universe (comics) |
| DCU | Dublin City University |
| DCU | D.C. United (soccer) |
| DCU | Desert Camouflage Uniform |
| DCU | Display Control Unit |
| DCU | Digital Federal Credit Union |
| DCU | Data Concentrator Unit |
| DCU | Desert Combat Uniform |
| DCU | Digital Control Unit |
| DCU | Delayed Coker Unit |
| DCU | Display and Control Unit (NASA) |
| DCU | Desjardins Credit Union (Canada) |
| DCU | Dispersion Compensation Unit (Cisco) |
| DCU | Dispersion Compensation Unit |
| DCU | Data Control Unit |
| DCU | Danmarks Cykle Union |
| DCU | Distributed Control Unit (computer hardware) |
| DCU | Den-En Chofu University (Japan) |
| DCU | Data Collection Unit |
| DCU | Division of Colleges and Universities |
| DCU | Drinker's Check-Up |
| DCU | Diplôme Comptable d'Université (French: University Diploma of Accounting) |
| DCU | Device Configuration Utility |
| DCU | Dedicated Control Unit |
| DCU | Delphi Compiled Unit |
| DCU | Data Cache Unit |
| DCU | Dispenser Control Unit |
| DCU | Dynamic Component Upgrade (USMC) |
| DCU | Designated Complaint Unit (various companies) |
| DCU | Diesel Control Unit (Diesel Injection Technology) |
| DCU | Directory of Canadian Universities |
| DCU | Data Channel Unit |
| DCU | Document Control Unit |
| DCU | Dry Completion Unit (oil industry) |
| DCU | Data Communications Utility |
| DCU | Diagnostic Control Unit |
| DCU | Digital Computer Unit (NASA) |
| DCU | Decimal Counting Unit |
| DCU | Deployment Control Unit |
| DCU | Democratic Canadian Union |
| DCU | Diagnostic Controller Unit |
| DCU | Debark Control Unit |
| DCU | Data Command Unit |
| DCU | Drum Control Unit |
| DCU | Diamond Cleaver Unit |
| DCU | Decade Counting Unit |
| DCU | Detection & Control Unit |
| DCU | Data Conversion Unit |
| DCU | DreamCast United (website) |
| DCU | Drexel Co-Op Units |
| DCU | Dive Computer Uplink |
| DCU | Digital/Display Control Unit |
| DCU | Distributed Computing Unit |
| DCU | Discharge Control Unit |