| Acronym | Meaning |
 | ADS | Aircraft Data Systems |
| ADS | Ancillary Data Service |
| ADSB | Advanced Display Systems Branch |
| ADSCEPTS | Advanced Self-contained Chemical Energy Propulsion |
| ADT | Aerated Drain Tank |
| ADTF | At Depth Test Facility |
| ADV | Atmospheric Dump Valve |
| ADVISAR | All Digital Video Imaging System For Atmospheric Research |
| AE | Atmospheric Explorer |
| AE | Architect/engineer |
| AEA | Atomic Energy Authority |
| AEA | Atomic Energy Act Of 1954 |
| AEB | Auxiliary Equipment Building |
| AEC | Associate Enforcement Counsel |
| AEC | Atomic Energy Commision |
| AECA | Arms Export Control Act |
| AED | Atomic Emission Detector |
| AED | Air Enforcement Division |
| AEDS | Atomic Energy Detection System |
| AEE | Alliance For Environmental Education |
| AEEN | Agence Europeenne Pour L'Energie Nucleaire |
| AEERL | Air And Energy Engineering Research Laboratory |
| AEGIS | Atmosphere Ecosystem Gas Interchange Study |
| AEM | Application Evaluation Matrix |
| AEN | Administrative Exception Note |
| AEO | Atomic Energy Organization |
| AEOS | Analytic Equation-of-state |
| AEP | Alkaline Earth Precipitate |
| AER | Advanced Electric Reactor |
| AER | Average Evoked Response |
| AER | AWIPS Forecast Preparation System |
| AERE | Atomic Energy Research Establishment |
| AERE | Association Of Environmental & Resources Economists |
| AEROCE | Air Ocean Exchange Experiment |
| AEROCE | Atmosphere/Ocean Chemistry Experiment |
| AES | Atmospheric Environment Service |
| AES | Atomic Emission Spectroscopy |
| AES | Auger Electron Spectroscopy |
| AESA | Atmospheric Effects Of Stratospheric Aircraft |
| AESD | Advanced Energy System Division |
| AEW | Airborne Early Warning |
| AF | United States Air Force Affiliate |
| AF | Auxiliary Feed |
| AF | Audio Frequency |
| AF&F | Arming |
| AF/INX | Air Force Assistant Chief Of Staff |
| AFA | American Forestry Association |
| AFAP | Artillery-fired Atomic Projectile |
| AFASE | Association For Applied Solar Energy |
| AFATL | Air Force Armament And Testing Laboratory |
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