| Abbreviation | Definition |
|---|---|
| RIAS | Radio In the American Sector |
| RIB | Read It Backwards |
| RIBQ | Rhode Island Business Quarterly |
| RIE | Review of International Economics |
| RIM | Reality Impaired Media |
| RIMS | Removable Interlocking Media Storage |
| RIO | Radio Information Officer |
| RIO | Reviewers International Organization |
| RIP | Rendering In Pen |
| RIP | Reprints And Interactive Permissions |
| RITM | Rabbit In The Moon |
| RITN | Research In The News |
| RITT | The Rittenhouse Review |
| RITV | Reminiscent India Television |
| RJ | Right Justified |
| RJN | Rockland Journal-News |
| RKM | Russell Kightley Media |
| RKN | Radio Krishna Network |
| RKN | Rockman Killer (Serial) Number |
| RKO | Radio Keith Orpheum |