| Abbreviation | Definition |
|---|---|
| SPAR | Spring Primer Adventure Race |
| SPDC | Sociedade Portuguesa da Contracepção |
| SPPT | Safety Paracentesis Procedure Tray |
| SPR | Special Production Racing |
| SR | Smiler Racing |
| SR | Sport Racing |
| SR | Straight Race |
| SRD | Ski Racer Die |
| SRD | Strategic Racing Designs |
| SRL | Street Racing League |
| SRP | Security Race Products |
| SRP | Spokane Raceway Park |
| SRPC | Santolan Racing Pigeon Club |
| SRPF | Southern Racing Pigeon Federation |
| SRRS | Souther Rock Racing Series |
| SRRS | Southern Regional Racing Series |
| SRRS | Southern Rock Racing Series |
| SRRT | Subaru Road Racing Team |
| SRS | Street Racing Syndicate |
| SRT | Special Racing Team |