| Abbreviation | Definition |
|---|---|
| FBFCU | Financial Builders Federal Credit Union |
| FBFCU | First Bristol Federal Credit Union |
| FBFCU | Fort Bayard Federal Credit Union |
| FBFCU | Fort Bragg Federal Credit Union |
| FBMU | Finnish Businessmen Mission Union |
| FCCU | Falls Catholic Credit Union |
| FCCU | Financial Center Credit Union |
| FCCU | First Choice Credit Union |
| FCCU | First Commerce Credit Union |
| FCCU | First Community Credit Union |
| FCCU | Florida Central Credit Union |
| FCFT | Fairfax County Federation of Teachers |
| FCSU | Federation of Civil Service Unions |
| FCU | Federal Credit Union |
| FCU | Florida Credit Union |
| FDCU | First Dorset Credit Union |
| FDHU | Federal Development Health Union |
| FEDESAA | Federation of Engineering Service Association of Assam |
| FEDFA | Federated Engine Drivers and Firemens Association of Australasia |
| FET | Fair and Equitable Treatment |