| Abbreviation | Definition |
|---|---|
| RTNZ | Return if Non-Zero |
| RTO | Real Time Output |
| RTO | Return To One |
| RTO | Research and Technology Organization |
| RTO | Road Transport Office |
| RTP | Real - Time Transport Protocol |
| RTP | Retention Tenure Promotion |
| RTPCR | Reverse Transcriptase Polymerase Chain Reaction |
| RTPT | Research Technician |
| RTR | Results Through Referrals |
| RTRC | Reset Real-Time Clock |
| RTS | Resistance Training Specialist |
| RTS | Repatriation Transport Scheme |
| RTW | Return To Win |
| RU | Read Uncommitted |
| RUNM | Residential Unit Nurse Manager |
| RUP | Rational Unified Process |
| RUQ | Right Upper Quadrant |
| RUW | Remaining Usable Water |
| RV | Real Value |
| RV | Relative Value |
| RV | Requires Variable |
| RV | Receive Variable |
| RVE | Remote Video Expertise |
| RVG | Radionuclide VentriculoGram |
| RVH | Research Vessel Heraclitus |
| RVO | Royal Victorian Order |
| RVQ | Register Value Queue |
| RVQ | Receive Value_Request |
| RVT | Registered Veterinary Technician |
| RVT | Remote Visual Testing |
| RW | Rewrite While |
| RW | Readable While |
| RW | Readable/Writable |
| RWA | Ready Willing And Available |
| RWG | Raw Wool Group |
| RWI | Read, Write, Initialize |
| RWIFE | Rotary Wing Instrument Flight Examiner |
| RWII | Rotary Wing Instrument Instructor |
| RXR | Resource eXchange Register |
| RXT | Radiation X-ray Therapy |
| RZM | Root Zone Management |