| RTRP | Real Time Routing Protocol 
| Others |
| RTRP | Reconstructive Transplant Research Program
| Others |
| RTRP | Regional Telecommunications Restructuring Program
| Others |
| RTRP | Regional Telecommunications Restructuring Project
| Others |
| RTRP | Registered Tax Return Preparer
| Others |
| RTRP | Reinforced Thermosetting Resin Pipe
| Others |
| RTRP | Remedial Technology Review Program
| Others |
| RTRP | Research Time Release Program
| Others |
| RTRP | Research Triangle Regional Partnership
| Others |
| RTRP | Riverside Transmission Reliability Project
| Others |
| RTRP | Road Traffic Reduction Plan
| Others |