| Abbreviation | Definition |
|---|---|
| DWD | De Weerdt Design |
| DWD | Dublin Whiskey Distillery |
| DWEL | Daniels Wingerak Engineering Ltd |
| DWL | Diversified Well Logging |
| DWL | Dutch Water Limited |
| DWM | Deutsche Waffen Munitionfabriken |
| DWPL | Dance Websolutions Pvt Ltd |
| DWT | Davis Wright Tremaine |
| DYC | Detroit Yacht Club |
| DYC | Don Young Company |
| DYDMAI | Don't You Dare Move An Inch |
| DYE | David Young Enterprises |
| DYE | David Youngblood Enterprises |
| DYK | Dongfeng Yueda Kia Motors Co., Ltd. |
| DYTB | Daytonabrands, Inc. |
| DZ | Discovery Zone |
| DZR | Double Zinc Ribbon |
| DZSI | D Z S, Inc. |
| DZW | Domination Zone Wrestling, Inc. |
| E&Y | Ernst Young |