| Abbreviation | Definition |
|---|---|
| RHPC | Ryan Higa Production Company |
| RHPC | Ryan Higa Productions Company |
| RHR | Rageth Human Resources |
| RHR | Rector-Hayden, Realtors |
| RHR | Round Hill Ranch |
| RHRE | Robert Harley Real Estate |
| RHSC | Refrigeration Hardware Supply Corp |
| RHT | Robert Half Technology |
| RHT | Royal Holiday Travel, Inc. |
| RHT | Royal Holiday Travel, Incorporated |
| RHTC | Robin Hood Theatre Company |
| RHV | Richard Hidalgo Vascone |
| RHV | Rose- Hulman Ventures |
| RHZ | RHZ Environmental Controls, L.L.C. |
| RI | Redline Imports |
| RIAA | Recording Industry Association of America |
| RIAC | Rhode Island Airport Corporation |
| RIAC | Rock Island Auction Company |
| RIBB | Registro Internacional Boliviano de Buques |
| RIBD | Resources for International Business Development |