| ABC | Australian Broadcasting Commission |
|---|---|
| AED | Atomic Emission Detector |
| AEL | Accessible Emission Limit |
| AEM | Application Explorer Mission, tri americké družice určené na diaľkový prieskum Zeme |
| ATC | Australian Telecommunications Commission |
| ATF | Automatic Transmission Fluid |
| ATF | Automatic Transmission Fluid (skr.) |
| CIE | Commission Internationale de l'Eclairage |
| ETC | European Travel Commission |
| ICRP | International Commission For Radiation Protection (skr.) |