| Abbreviation | Definition |
|---|---|
| AFEAS | Alternative Fluorocarbons Environmental Acceptability Study |
| AFGWC | Air Force Global Weather Central |
| AFOS | Automation of Field Operations and Services |
| AFPS | AWIPS Forecast Preparation System |
| AFS | American Fisheries School |
| AFS | Asian Fisheries Society |
| AFS | Australian Fisheries Service |
| AFSC | Alaska Fisheries Science Center |
| AFTAD | Analysis-Forecast Transport and Diffusion |
| AFVP | Aviation Forecast Verification Program |
| AFWG | AFPS (AWIPS Forecast Preparation System) Forecast Working Group |
| AFWG | AFPS Forecast Working Group |
| AGARD | Advisory Group for Aerospace Research and Development |
| AGASP | Arctic Gas and Aerosol Sampling Program |
| AGCM | Atmospheric General Circulation Model |
| AGFS | Aviation Gridded Forecast System |
| AGGG | Advisory Group on Greenhouse Gases |
| AGI | American Geological Institute |
| AGRA | Atlantic and Gulf Reef Assessment |
| AIAA | American Institute of Aeronautics and Astronautics |