| Abbreviation | Definition |
|---|---|
| RTR | Restore the Republic |
| RTR | Ride The Rockies |
| RTR | Right to Rebel |
| RTR | Right to Represent |
| RTR | Rubber Tramp Rendezvous |
| RTR | Rundfunk Telekom Regulierungs |
| RTR | Russell Tyler Ruthton |
| RTRC | Real Time Recent Changes |
| RTRC | Refugee Trauma and Resilience Center |
| RTRC | Reinforce Thermosetting Resin Conduit |
| RTRM | Real Time Remote Monitoring |
| RTRM | Registered Technologist Radiology Mammography |
| RTRM | Run Time Resource Manager |
| RTRP | Riverside Transmission Reliability Project |
| RTRS | Radio Televizija Republike Srpske |
| RTRT | Rational Test Real Time |
| RTRT | Real Time Race Tracking |
| RTRT | Real Time Range Tracker |
| RTRT | Real Time Ray Tracing |
| RTRT | Real Time Release Testing |