| Abbreviation | Definition |
|---|---|
| FRMAC | Federal Radiological Management Assessment Center |
| FSAO | Freshwater Switchyard of the Arctic Ocean |
| FSL | Forecast Systems Laboratory |
| FSM | Federated States of Micronesia |
| FSO | Floating Storage and Offloading |
| FSSP | Forward-scattering Spectrometer Probe |
| FTE | Fulltime Equivalent |
| FTIR | Fourier Transform Infrared |
| FTS | Federal Telecommunications System |
| FV | Flawless Victory |
| FVOG | Fishing Vessel Obligation Guarantee |
| FWPCA | Federal Water Pollution Control Act |
| FWQC | Federal Water Quality Criteria |
| FX-ALPHA | FSL X Window AWIPS-Like Prototype for Hydrometeorological Applications |
| FY | Fiscal Year |
| GA | General Assembly |
| GAC | Global Area Coverage |
| GAFC | Great Annual Fish Count |
| GAGE | Global Atmospheric Gases Experiment |
| GAIM | Global Analysis, Interpretation, and Modeling |