| Abbreviation | Definition |
|---|---|
| RAT | Ride All The Time |
| RAT | Rider's Association of Triumph |
| RAT | Right At Torrance |
| RAT | Road Anomalies Tour |
| RAT | Rocket Aided Takeoff |
| RATA | Representation and Transportation Allowances |
| RATCF | Radar Air Traffic Control Facilities |
| RATI | Regional Air Transportation Initiative |
| RATS | Regional Atlanta Transportation SPLOST |
| RAV | Rapid Access Vehicle |
| RAV | Rapid Attack Vehicle |
| RAV | Recreational Active Vehicle |
| RAV | Recreational Activity Vehicle |
| RAV | Restricted Access Vehicle |
| RAV | Ridiculously Abbreviated Vehicle |
| RAVE | Radical Alternative Vehicle Equipment |
| RAVE | Rotax Automatic Variable Exhaust |
| RAVN | Remove Abandoned Vehicles Now |
| RAW | Riders Around the World |
| RAWR | Rear Axle Weight Rating |