| Abbreviation | Definition |
|---|---|
| CTUF | Cry The Union Forever |
| CTUO | Central Trade Union Organisations |
| CU | Commercial Union |
| CUA | Credit Union of America |
| CUB | City Union Bank |
| CUB | Clarkson Union Board |
| CUC | Control Union Certifications |
| CUC | Credit Union Consultants |
| CUCC | Credit Union Central of Canada |
| CUCE | Credit Union Compliance Expert |
| CUCI | Cincinnati Union Coop Initiative |
| CUCI | Cincinnati Union Cooperative Initiative |
| CUCI | Council of Unions in Colleges and Institutes |
| CUCM | Credit Union Central of Manitoba |
| CUD | Credit Union Department |
| CUDA | Credit Union Development Association |
| CUDE | Credit Union Development Education |
| CUDE | Credit Union Development Educator |
| CUDE | Credit Union Development Educators |
| CUDK | Credit Union Divisi Kontrol |