| Abbreviation | Definition |
|---|---|
| FCCU | Fort Community Credit Union |
| FCCU | Frontier Community Credit Union |
| FCFCU | Finance Center Federal Credit Union |
| FCFCU | First Citizens Federal Credit Union |
| FCFCU | First Class Federal Credit Union |
| FCFCU | First Commonwealth Federal Credit Union |
| FCFCU | Fort Campbell Federal Credit Union |
| FCU | Fiscal Credit Union |
| FCU | Foothills Credit Union |
| FCU | Frankenmuth Credit Union |
| FCU | Fulton Credit Union |
| FECCU | Financial Edge Community Credit Union |
| FECCU | First Edition Community Credit Union |
| FECU | First Entertainment Credit Union |
| FFCU | Fairfield Federal Credit Union |
| FFCU | Fairmont Federal Credit Union |
| FFCU | Fairport Federal Credit Union |
| FFCU | Fairwinds Federal Credit Union |
| FFCU | Fancy Farm Credit Union |
| FFCU | FAST (Families And Schools Together) Federal Credit Union |