| Abbreviation | Definition |
|---|---|
| DSDD | Deep Sea Divers Den |
| DSSA | Dog Show Superintendents Association |
| DTB | Dead Tree Book |
| DTCC | Desktop Themes Creators and Collectors |
| DTSC | Dusty Trails Saddle Club |
| DTS-SI | Digital Twin Spark Swirl Engine |
| DVBC | Diablo Valley Bridge Center |
| DVSP | Dark Valley / Skull Plains |
| DWS | Deep Water Soloing |
| EACC | Edmonton Antique Car Club |
| EAPG | Early American Pattern Glass |
| EARA | Early Arkansaw Reenactors Association |
| EB | Earnhardt Back |
| EBR | Evil Black Rifle |
| ECA | European Cockpit Association |
| ECBC | Empress Chinchilla Breeders Cooperative |
| ECES | East Coast Extreme Showoff |
| ECLD | East Coast Long Drive |
| ECS | English Club of Slipi, Jakarta, Indonesia |
| EFE | Exclusive First Editions |