- AEIF stands for Armco Employees Independent Federation
- AEIF stands for Association Européenne pour l’Interopérabilité Ferroviaire (French: European Association for Railway Interoperability)
- AEIF stands for Airport Environment Improvement Foundation (Japan)
- AEIF stands for Advantage Enterprise and Innovation Fund (UK)
- AEIF stands for Automotive Engineering Innovation Framework (automotive development software; IBM)
Abbreviations And Their Meaning