| Abbreviation | Definition |
|---|---|
| FSB | First State Bank |
| FSB | FMOD Sample Bank |
| FSB | Franklin Savings Bank |
| FSB | Franklin Synergy Bank |
| FSBT | First Security Bank and Trust |
| FSBT | First State Bank and Trust |
| FSBT | Forty Seven Bank Token |
| FSBU | First State Bank of Uvalde |
| FSC | Fernbank Science Center |
| FSIB | Financial Services Insurance and Banking |
| FSIB | First Security Islami Bank |
| FSIBL | First Security Islami Bank Limited |
| FSIBL | First Security Islami Bank Ltd |
| FSIBL | First Security Islami Bank LtdFirst Security Islami Bank |
| FSLIC | Federal Savings and Loan Insurance Corporation |
| FSLO | Fund Settlement Link Office |
| FSNB | First Security National Bank |
| FSNB | First Southern National Bank |
| FSNB | Fort Sill National Bank |
| FSRB | Faculty Student Research Banking |