AEIF
| Acronym | Definition |
|---|---|
| AEIF | Armco Employees Independent Federation |
| AEIF | Association Européenne pour l'Interopérabilité Ferroviaire (French: European Association for Railway Interoperability) |
| AEIF | Airport Environment Improvement Foundation (Japan) |
| AEIF | Advantage Enterprise and Innovation Fund (UK) |
| AEIF | Automotive Engineering Innovation Framework (automotive development software; IBM) |