| Abbreviation | Definition |
|---|---|
| RER | Rental Equipment Register |
| RERC | Real Estate Research Corporation |
| RESC | Randolph Eastern School Corp |
| RESC | Randolph Eastern School Corporation |
| RESCUE | Recycle Everything Save Colbys Usable Excess |
| RESI | Renewable Energy Solutions Inc |
| RESI | Richardson Engineering Services Inc |
| RETB | Real Estate Talk Boston |
| RETC | Renewable Energy Testing Center |
| RETC | Reserve Enlisted Training Corp |
| RETN | Region Eleven Telecommunications Network |
| RETS | Real Estate Title Services, Inc. |
| REVF | Review Free |
| RF | Remake Factory |
| RFA | Rubin Financial Advisors |
| RFA | Russell Fote & Associates, Inc., Expert Witness Safety Engineering |
| RFAI | Russell Fote & Associates, Inc., Expert Witness Safety Engineering |
| RFC | Residential Funding Corporation |
| RFC | Royalty For Commoners |
| RFD | Regional Food and Drink |