| Abbreviation | Definition |
|---|---|
| AEIS | Adult Education Interest Section |
| AEIS | Advanced Enterprise Information System |
| AEIS | Alabama Early Intervention Services |
| AEIS | Alberta Elevator Industry Seminar |
| AEIS | American Express Incentive Service |
| AEIS | American Express Incentive Services |
| AEIS | Atlas Evaluation Inspection Services |
| AEIS | Automatic Emergency Intervention Systems |
| AEIT | Airplane Equipment Interoperability Test |
| AEIY | America Eats Its Young |
| AEJ | Angry Elliott Jedras |
| AEJ | Asia ex Japan |
| AEJE | Apical Extension Of Junctional Epithelium |
| AEK | Akavan Erityisalojen Keskusliitto |
| AEK | Alfabetatze Euskalduntze Koordinakundea |
| AEK | All Electric Kitchen |
| AEK | Application Extension Kit |
| AEK | Athlitiki Enosi Konstantinoupoleos |
| AEK | Athlitiki Enosi Kostantinopoleos |
| AEK | Athlitiki Enosis Kition |