| Acronym | Definition |
|---|
| DER | Dearborn (Amtrak station code; Dearborn, MI) |
| DER | Department of Environmental Regulation |
| DER | Distributed Energy Resources |
| DER | Department of Employee Relations (various locations) |
| DER | Department of Environmental Resources (formerly Pennsylvania Department of Environmental Protection) |
| DER | Division of Engineering Research (various schools) |
| DER | Debt/Equity Ratio |
| DER | Disaster Emergency Response |
| DER | Distinguished Encoding Rules |
| DER | Designated Employer Representative |
| DER | Deutsches Reisebüro (German Travel) |
| DER | Derevnya (Russian, village; used in postal addresses) |
| DER | Deep Elm Records |
| DER | Departamento de Estradas de Rodagem (Brazil) |
| DER | Division of Extramural Research (NIH) |
| DER | Duplicate Email Remover (software) |
| DER | Departure End of the Runway |
| DER | Dividend Equivalent Rights (stock award0 |
| DER | Designated Engineering Representative (commercial airline engineers given signature authority by FAA) |
| DER | Destination Europe Resources (trademark of New World Travel, Inc.; New York, NY) |
| DER | Data Error Reporting |
| DER | Dual Ethernet Router |
| DER | Drawing Error Report |
| DER | Definite Encoding Rules |
| DER | Draft Environmental Report |
| DER | Drug Experience Report (pharmascience) |
| DER | Destroyer Escort - Radar |
| DER | dwelling emission rate (UK) |
| DER | Defense Efficiency Ratio (baseball statistic) |
| DER | Dose Equivalent Rate |
| DER | Directly Executable Representation |
| DER | Radar Picket Escort Ship |
| DER | Data Evaluation Record |
| DER | Department of Environmental Research |
| DER | Desviacion Estandar de la Media |
| DER | Dynamically Extensible Router |
| DER | Département d'Etudes des Réacteurs (French: Reactors Studies Department; nuclear energy) |
| DER | Descend En Route |
| DER | Digital Extended Request |
| DER | Dry Extract Ratio |
| DER | Development Engineering Release |
| DER | Documentation Evaluation Record |
| DER | Design Engineering Reliability |
| DER | Discrepancy Event Report |
| DER | Data Exchange Requirement (US Navy) |
