| RTR | Racing Throttle Response 
| Others |
| RTR | Rapid Tension Relief
| Others |
| RTR | Ready To Rebuild
| Others |
| RTR | Ready To Return
| Others |
| RTR | Ready To Rock
| Others |
| RTR | Ready to Roll
| Others |
| RTR | Ready To Rumble
| Others |
| RTR | Ready To Run
| Others |
| RTR | Real Time Interrupt Rate
| Others |
| RTR | Real Time Rating
| Others |
| RTR | Real Time Recording
| Others |
| RTR | Real time reliability
| Others |
| RTR | Real Time Reliable
| Others |
| RTR | Real Time Rendering
| Others |
| RTR | Real Time Reporter
| Others |
| RTR | Real Time Reporting
| Others |
| RTR | Real-Time Reporting
| Others |
| RTR | Real-Time Ring
| Others |
| RTR | Realized Trading Returns
| Others |
| RTR | Rear Tread Removed
| Others |
| RTR | Recall Termination Recommendation
| Others |
| RTR | Record To Reporting
| Others |
| RTR | Recruit Training Regiment
| Others |
| RTR | Recruiting Training and Research
| Others |
| RTR | Recycled Tire Rubber
| Others |
| RTR | Registered Technologist Radiography
| Others |
| RTR | Reinforced Thermosetting Resin
| Others |
| RTR | Relationships Trust Results
| Others |
| RTR | Relative Transmission Risk
| Others |
| RTR | Reliable Transaction Router
| Others |
| RTR | Remittance Transfer Receipt
| Others |
| RTR | Remote Transmission Request
| Others |
| RTR | Remote Transmitter/Receiver
| Others |
| RTR | Remote Trunk Lid Release
| Others |
| RTR | Renault Technologie Roumanie
| Others |
| RTR | Renault Trucks Racing
| Others |
| RTR | Rent the Runway
| Others |
| RTR | Reorganization Through Reduction
| Others |
| RTR | Request Take Release
| Others |
| RTR | Reset To Ride
| Others |
| RTR | Residual Tissue Repository
| Others |
| RtR | Respect the Resistance
| Others |
| RTR | Response Time Reporter
| Others |
| RTR | Response To Request
| Others |
| RTR | Restore the Republic
| Others |
| RTR | Results Through Referrals
| Others |
| RTR | Return To Ravnica
| Others |
| RTR | Reverse Flow Temperature Control
| Others |
| RTR | Reverse Tine Tiller
| Others |
| RTR | Revised Technical Report
| Others |
| RTR | Revolution Tubeless Ready
| Others |
| RTR | Richmond Teacher Residency
| Others |
| RTR | Richmond Triumph Register
| Others |
| RTR | Ride The Rockies
| Others |
| RTR | Right to Rebel
| Others |
| RTR | Right to Represent
| Others |
| RTR | Right To Reside
| Others |
| RTR | Risk and Technology Review
| Others |
| RTR | Road Texture Recognition
| Others |
| RTR | Road Tire Rear
| Others |
| RTR | Road To Recovery
| Others |
| RTR | Road To Responsibility
| Others |
| RTR | Road Track Race
| Others |
| RTR | Road Traffic Regulations
| Others |
| RTR | Road Traffic Rules
| Others |
| RTR | Road Transport Reform
| Others |
| RTR | Rob The Robot
| Others |
| RTR | Rob Transport Rob
| Others |
| RTR | Role, Task, and Report
| Others |
| RTR | Roll Tide Roll
| Others |
| RTR | Roll Tucker Roll
| Others |
| RTR | Rotor
| Others |
| RTR | Rubber Tramp Rendezvous
| Others |
| RTR | Ruf Turbo Rennsport
| Others |
| RTR | Run Time Reconfigurable
| Others |
| RTR | Runaway Truck Ramp
| Others |
| RTR | Rundfunk Telekom Regulierungs
| Others |
| RTR | Russell Tyler Ruthton
| Others |