| Abbreviation | Definition |
|---|---|
| DCR | Department of Conservation and Recreation |
| DCR | Department of Conservation and Recreation's |
| DCV | Dorset Conservation Volunteers |
| DDCR | Dubai Desert Conservation Reserve |
| DDCS | Doris Duke Conservation Scholars |
| DECG | Dee Estuary Conservation Group |
| DESTA | Don't Ever Say That Again. |
| DFCA | Donegal Fish and Conservation Association |
| DICT | Dyer Island Conservation Trust |
| DIST | Distraction |
| DLCC | Desert Landscape Conservation Cooperative |
| DLCT | Dover Land Conservation Trust |
| DLWC | Department of Land and Water Conservation |
| DNCP | Department of Nature Conservation and Protection |
| DNRC | Department of Natural Resources Conservation |
| DSC | Division of Soil Conservation |
| DSCC | Deep Sea Conservation Coalition |
| DSCN | Danish Society for the Conservation of Nature |
| DSCO | District Soil Conservation Office |
| DSWC | Division of Soil and Water Conservation |