| Abbreviation | Definition |
|---|---|
| FW | Fiscal Week |
| FW | Fresh Water |
| FWA | Federalwide Assurance ((for human subject research) |
| FWA | Fraud, Waste, & Abuse |
| FWC | Foreign Wives Club |
| FWG | Federal Working Group |
| FWH | Federal WithHolding Tax |
| FWP | Federal Women's Program |
| FWP | Field Work Proposal |
| FWQC | Federal Water Quality Criteria |
| FWS | Federal Work Study |
| FWS | Fish and Wildlife Service |
| FWS | Flight Warning System |
| FWT | Federal Withholding Tax |
| FWW | Fluctuating Work Week |
| FYA | For Your Action |
| FYB | Federal Yellow Book |
| FYC | For Your Consideration |
| FYE | Fiscal Year End |
| FYI | For Your Information |