| Abbreviation | Definition |
|---|---|
| RI | Internal Resistance |
| RIA | Regional Integration Agreement |
| RIS | Regional Innovation Strategies |
| RIS | Regional Innovation Strategy |
| RIV | Registrar of Imported Vehicles |
| RMTC | Riyadh Metro Transit Consultant |
| RO | Revenue Officer |
| ROL | Risk of Loss |
| RORO | Roll-On, Roll-Off |
| ROU | Right of Use |
| RR | RailRoad |
| RROA | Rate of Return On Assets |
| RS | Regional Stability |
| RSEB | Royal Securities Exchange of Bhutan |
| RSG | Rail-Supported Gantry |
| RSVP | Rubber Stamp Vendors Promise |
| RTA | Regional Trade Agreement |
| RTFM | Read The Fine Manual |
| RTFP | Regional Trade Facilitation Program |
| RTP | Restrictive Trade Practices |