| Abbreviation | Definition |
|---|---|
| RDC | Radiation Detection Company |
| RDC | Regional Development Company |
| RDC | Roxborough Development Corporation |
| RDDC | Rochester Downtown Development Corporation |
| RDG | Radio Data Group, Inc. |
| RDG | Referral Development Group of Northern Kentucky |
| RDG | Restaurant Development Group |
| RDG | Retail Design Group |
| RDG | Ritchie Design Group, Inc. |
| RDG | Russ Darrow Group, Inc. |
| RDGI | Russ Darrow Group, Inc. |
| RDGL | RadioGel, Inc. |
| RDH | Regal Drug House |
| RDH | Rounthwaite, Dick and Hadley Architects Inc. |
| RDI | Red Dragon Inn |
| RDI | Renewal Development Inc |
| RDI | Research Development International |
| RDI | Resource Development Incorporated |
| RDI | Rochester Diamond Importers |
| RDK | Richard D. Kimball Company, Inc. |