| Abbreviation | Definition |
|---|---|
| UCCU | Utah Community Credit Union |
| UCU | United Credit Union |
| UCU | University Credit Union |
| UECU | Utilities Employees Credit Union |
| UFCU | Ukrainian Federal Credit Union |
| UFCU | Ulster Federal Credit Union |
| UFCU | Ulster Federation of Credit Unions |
| UFCU | United Federal Credit Union |
| UFCU | University Federal Credit Union |
| UFCU | Urban Federal Credit Union |
| UIWFCU | United Industrial Workers Federal Credit Union |
| UK | United Kollectives |
| UMEFCU | United Maryland Employees Federal Credit Union |
| UNFCU | United Nations Federal Credit Union |
| UPSFCU | University of Pennsylvania Student Federal Credit Union |
| URWFCU | United Rubber Workers Federal Credit Union |
| USCCU | Ukrainian St. Catharines Credit Union |
| USCCU | United States Courthouse Credit Union |
| USCFCU | United States Central Federal Credit Union |
| USCGCCU | United States Coast Guard Community Credit Unnion |