| Abbreviation | Definition |
|---|---|
| CSC | Container Safety Convention |
| CSC | Certificate of Shorthanded Cargoes |
| CSD | Critical Sector Detector |
| CSET | Coalition for Safe and Efficient Transportation |
| CSI | Center Station In charge |
| CSI | Coupe Sport Injected |
| CSL | Coupe Sport Lightweight |
| CSLV | Constellation Systems Launch Vehicle |
| CSM | Conceptual Site Model |
| CSNT | Certificate of Special Needs Transportation |
| CSR | Canal Service Road |
| CSRR | Cork South Ring Road |
| CSS | Cab Signal System |
| CST | Certification for Sustainable Transportation |
| CST | Citizens For Sensible Transportation |
| CST | Crew Space Transportation |
| CSTF | Cargo Security Task Force |
| CSTI | Center for Sustainable Transportation Infrastructure |
| CSTS | Crew Space Transportation System |
| CSUV | CoalMiner Subterranean Utility Vehicle |