| Abbreviation | Definition |
|---|---|
| DHMS | Diamond Home Services, Inc. |
| DHOM | Dominion Homes, Inc. |
| DHSM | Diagnostic Health Services, Inc. |
| DHTI | Dynamic Healthcare Technologies, Inc. |
| DHULZ | Dorchester Hugoton, LTD. |
| DIAC | Diapulse Corporation of America |
| DIAL | Dialog Corporation, P. L. C. |
| DIAM | Diagnostic Imaging Services |
| DIAN | Dianon Systems, Inc. |
| DICE | SureBET Casinos, Inc. |
| DICL | Di An Controls, Inc. |
| DIEG | Diehl Graphsoft, Inc. |
| DIETE | Surequest Systems, Inc. |
| DIGE | Digene Corporation |
| DIGI | Digital Impact, Inc. |
| DIGL | Digital Lightwave, Inc. |
| DIGM | Control Chief Holdings, Inc. |
| DIGS | Digs, Inc. |
| DIGX | Digex, Inc. |
| DIIBF | Dorel Industries, Inc. |