| Acronym | Meaning |
| AEU | Aeromedical Evacuation Unit |
| AEU | Airborne Electronics Unit |
| AEU | Analog Electronics Unit |
| AEU | Antenna Equipment Unit |
| AEU | Appropriate Economic Unit (for measuring gain or loss; US tax code) |
| AEU | Assign Essential User Bypass (US DoD) |
| AEU | Australian Emission Units (Australia) |
| AEU | Auxiliary Electronics Unit |
| AEU | Avionics Equipment Unit |