| Abbreviation | Definition |
|---|---|
| DLRC | Dianne Lee Regulatory Consultancy |
| DMC | Decent Management Consulting |
| DMCG | DePaul Marketing Consulting Group |
| DMCG | Direct Marketing Consulting Group |
| DOC | Daniel Obiago Consulting |
| DOConsulting | Daniel Obiago Consulting |
| DOOC | DuPont OCP Operations Consulting |
| DPCL | Development Programme for Consultant Leadership |
| DRCG | Dutch Ridge Consulting Group |
| DSC | Distributer Sales Consultant |
| DSCD | Dobbins Softball Consulting and Development |
| E2Y | Digital Commerce Consultants e2ycommerce.com/ |
| E2Y | Digital Commerce Consultants e2ycommerce.com/ |
| EAC | Euro Asia Consulting |
| EACG | Emory Alumni Consulting Group |
| EACG | Enterprise Architecture Consulting Group |
| ECDS | Epsilon Consulting Development Services |
| ECIS | Electrical Consulting and Inspection Services |
| ECP | Enterprise Consulting Partners |
| ECRC | Executive Clinical Research Consulting |