RS3
RS3 stands for:
- Audi RS3 , German passenger car
- Rieju RS3 , Spanish motorcycles
- Renault RS3 , French racing engine, see Williams F1 #The Williams-Renault era: a decade of success
- Regio-S-Bahn line 3 of the NordWestBahn
- Radschnellweg 3 , also State Cycle Route 3 in North Rhine-Westphalia, see Radschnellweg # Other bicycle expressway projects
- "Retrograded starch" , subspecies of resistant starch
RS-3 stands for:
- ALCO RS-3 , diesel-electric locomotive made by the American Locomotive Company
RS 3 stands for:
- Aprilia RS Cube , Italian prototype racing motorcycle from Aprilia
