| Abbreviation | Definition |
|---|---|
| CSSG | Certified Short Sale Guide |
| CSSP | Certified Sport Security Professional |
| CSSR | Certified Social Sourcing Recruiter |
| CST | Certified Scrum Trainer |
| CST | Certified Scrum Trainers |
| CSTM | Certified Software Test Manager |
| CSTR | Certified Specialist in Trauma Registers |
| CSW | Certified Specialist of Wine |
| CSWI | Certified Senior Welding Inspector |
| CSWIP | Certification Scheme for Welding and Inspection Personnel |
| CT | Certified Translator |
| CTAG | Certification and Training Assessment Group |
| CTAS | Certified Test Administration Site |
| CTC | Certified True Copy |
| CTCB | Certified Tennis Court Builders |
| CTDI | Certified Trick Dog Instructor |
| CTDI | Certified Trick Dog Instructors |
| CTFA | Certified Trust and Financial Advisor |
| CTFA | Certified Trust Financial Advisor |
| CTP | Certified Treasury Professional |