| 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 |