| Abbreviation | Definition |
|---|---|
| AFTA | Acoustic Fatigue Test Article |
| AFTA | Aft Frame Tilt Actuator |
| AFTE | Autogenic Feedback Training Experiment |
| AFTEC | Air Force Test and Evaluation Center |
| AFV | Anti-Flood Valve |
| AFZES | Analytical Float Zone Experiment System |
| AG | Artificial Gravity |
| AG | Attitude Gyroscope |
| AGAA | Attitude Gyroscope Accelerometer Assembly |
| AGAMGU | Ancient Greece And Modern Greek Usage |
| AGAP | Attitude Gyroscope Accelerometer Package |
| AGB | Adjustable Grapple Bar |
| AGC | Apollo Guidance Computer |
| AGE | Aerospace Ground Equipment |
| AGO | Santiago Ground Station |
| AGOSS | Automated Ground Operations Scheduling System |
| AGPS | Assisted Global Positioning System |
| AGPS | Augmented Global Positioning System |
| A-GPS | Assisted Global Positioning System |
| AGS | Abort Guidance System |