| Abbreviation | Definition |
|---|---|
| RRN | Race Reports Net |
| RRN | Rally Racing News |
| RRP | Robinson Racing Products |
| RRR | Real Race Replica |
| RRS | Rally Racing Sport |
| RRS | Regional Racing Series |
| RRTP | Retired Racehorse Training Project |
| RRU | Race Relations Unit |
| RRW | Race Results Weekly |
| RS | Race Series |
| RS | Race Sport |
| RS | Racing Sedan |
| RSB | Racing System Builder |
| RSD | Race Specific Design |
| RSE | Race Specific Equipment |
| RSN | Racing Simulation Network |
| RSR | Ready Set Race |
| RSR | Really Scorched Racer |
| RSR | Regional School of Racing |
| RSR | RennSport Rennwagen |