| Abbreviation | Definition |
|---|---|
| DOC | Daiichi Optical Company |
| DOCC | Distributors Of Containers and Closures |
| DOCL | Dubri Oil Company Limited |
| DODI | Diamond Offshore Drilling, Inc. |
| DOG | Dienst Over Grenzen |
| DOI | Disney On Ice |
| DOI | Distinction Of Image |
| DOIL | Dragon Offshore Industries LLC |
| DOIT | Division Of Information Technology |
| DOP | Dance Only Productions |
| DORC | Dorchester Online Radio Company |
| DOSI | Dasigi Overseas Staffing Inc |
| DOTI | Displays and Optical Technologies Inc |
| DOU | Digitaal Onderwijs Utrecht |
| DOW | Division Of Work |
| DOW | Donuts On Wheels |
| DOW | Dow Chemical Company |
| DOWC | Dealer Owned Warranty Company |
| DOWC | Del Oro Water Company |
| DP | Dura Power |