| Abbreviation | Definition |
|---|---|
| DERT | Disaster and Emergency Response Team |
| DERZ | Defense Economic Readjustment Zone Program (Texas) |
| DESU | Delhi Electric Supply Undertaking |
| DFC | Division of Family and Children |
| DFG | Department of Fish and Game |
| DFI | Department of Financial Institutions |
| DFL | Democratic Farm Labor |
| DFLI | Delaware Financial Literacy Institute |
| DFO | Dairy Farmers of Ontario (created August 1, 1995 supplanting the OMMB) |
| DFW | Dallas Fort Worth |
| DHA | Defence Housing Authority |
| DHCR | Division of Housing and Community Renewal |
| DHCS | Department of Health Care Services |
| DHE | Department of Higher Education |
| DHEC | Department of Health & Environmental Control |
| DHSA | Department of Health Services Administration |
| DHSP | Department of Human Service Programs |
| DHSS | Delaware Health and Social Services |
| DHSS | Department Of Health And Social Services |
| DIA | Department of Industrial Accidents |