| Abbreviation | Definition |
|---|---|
| RCR | Rock Creek Ranch |
| RCRC | Reston Community Reinvestment Corporation |
| RCRC | Rosenberg Corporate Research Center |
| RCS | Real Communication Solutions |
| RCS | Real Company Stuff |
| RCS | Residence and Catering Services |
| RCS | Riap Computer Services |
| RCS | Roof Consulting Services, Inc. |
| RCS | Ryan Computer Services |
| RCSA | Research Corporation for Science Advancement |
| RCSC | Retail Council Services Corp |
| RCSC | Rural Consumer Services Corporation |
| RCSI | Richmond Community Services Inc |
| RCT | Repertory Company Theatre |
| RCTC | River City Theatre Company |
| RCTC | Rose City Transit Company |
| RD | Reader's Digest |
| RD | Recemment Degorge |
| RDAC | Rural Development Advisory Corporation |
| RDBI | Renaissance Design Build Inc |