| Abbreviation | Definition |
|---|---|
| CIDA | Certified IDEA Data Analyst |
| CIDC | Certificate in Diabetes Care |
| CIDD | Certification Interface Definition Document |
| CIE | Certified Industrial Engineering |
| CIEP | Certified Industrial Energy Professional |
| CIEP | Certified Intensive English Programme |
| CIFA | Certified Investment and Financial Analysts |
| CIFAS | Certified International Financial Accounting Specialist |
| CIG | Certified Interpretive Guide |
| CIGE | Certified Identity Governance Expert |
| CIH | Certificate in Industrial Health |
| CIH | Certified Incident Handler |
| CIH | Certified Industrial Hygiene |
| CIHC | Certified International Health Coach |
| CIHD | College Integrated Healing Diploma |
| CIHE | Certified Incident Handling Engineer |
| CIID | Certified Ignition Interlock Device |
| CIIO | Certified Internal Investigation Officer |
| CIIP | Certified Imaging Informatics Professional |
| CIL | Certified Innovation Leader |