| Abbreviation | Definition |
|---|---|
| RTCA | Requirements and Technical Concepts for Aviation |
| RTCA | Reston Town Center Association |
| RTCA | Robert Toombs Christian Academy |
| RTCC | Real Time Calendar and Clock |
| RTCC | Real Time Calendar Clock |
| RTCC | Real Time Clock and Calendar |
| RTCC | Real Time Clock Calendar |
| RTCC | Remote Tap Changer Control |
| RTCC | Richard Thorne Classic Cars |
| RTCE | Real Time Claims Estimators |
| RTCH | Rough Terrain Cargo Handler |
| RTCH | Rough Terrian Container Handler |
| RTCH | Rought Terrain Cargo Handeling |
| RTCL | Raiyan Telecom Carrier Limited |
| RTCL | Raiyan Telecom/Carrier Limited |
| RTCL | Real Time Compatibility Layer |
| RTCL | Real Time Computing Lab |
| RTCL | Real time Control Lab |
| RTCM | Rate Type Compaction Method |
| RTCM | Real Time Correction Measure |