| Abbreviation | Definition |
|---|---|
| COIP | Certificate Of Interested Persons |
| COLB | Certificate of Live Birth |
| COLF | Certified Online Learning Facilitator |
| COME | Co Operation Mature Ego |
| COMT | Certificate in Orthopaedic Manual Therapy |
| COMT | Certification in Orthopedic Manual Therapy |
| COMT | Certified Ophthalmic Medical Technologist |
| COMT | Certified Orthopedic Manual Therapist |
| COOB | Certification out of a Box |
| COPC | Certificate Of Program Compliance |
| COR | Certification of Recognition |
| CORE | Certificate Of Religious Education |
| CORE | Certified Online Records Exchange |
| CORT | Certified Operating Room Technician |
| COSC | Certified Orthopaedic Surgery Coder |
| COSM | Certificate for Occupational Safety ManagersTM |
| COTA | Certified Occupational Therapy Assisant |
| COTP | Certified Online Training Professional |
| COTP | Certified Online Training Professionals |
| COU | Certificate of Use |