| Abbreviation | Definition |
|---|---|
| CSSP | Certified Sport Security Professionals |
| CST | Certified Service Technician |
| CST | Certified Survey Technician |
| CSTM | Certified Software Testing Manager |
| CSTP | Certified Security Testing Professional |
| CSTP | Certified Student Travel Professional |
| CSTR | Certified Specialist in Trauma Registries |
| CSVS | Certified Sport Venue Staff |
| CSWIP | Certification Scheme for Welding Inspection Personnel |
| CSWM | Certified Social Work Manager |
| CSWO | Certified Storm Water Operator |
| CSWT | Certified Secure Web Tester |
| CSYI | Certified Sport Yoga Instructor |
| CSYS | Certificate of Sixth Year Studies |
| CT | Certificate of Teaching |
| CT | Certificate Transparency |
| CT | Certification and Transparency |
| CTA | Certified Technical Architect |
| CTA | Certified TestStand Architect |
| CTA | Certified Tourism Ambassadors |