| Abbreviation | Definition |
|---|---|
| AFA | Adaptive Focused Acoustics |
| AFA | Average Fock Approximation |
| AFC | Air Flow Controller |
| AFC | Amplitude to Frequency Conversion |
| AFCP | Atomic Flux Coating Process |
| AFFT | Asymptotically Free Field Theories |
| AFI | Accordion Fringe Interferometry |
| AFM | Atomic Force Microscopy |
| AFP | Accelerated Freefall Progression |
| AFPS | Analyzing Fluid Power Systems |
| AFS | Abstract Force Simulator |
| AFT | Attractor Field Therapy |
| AFTA | Astrophysics Focused Telescope Assets |
| AFV | Alternative Fuel Vehicle |
| AFVH | Anti- Ferromagnetic van Hove scenario |
| AG | Anti-Gravity |
| AGFF | Air-to-Ground Free Fall |
| AGO | Automatic Geophysics Observatory |
| AGW | Acoustic Gravity Wave |
| AHEP | Advances in High Energy Physics |