- AEO stands for American Eagle Outfitters
- AEO stands for Authorised Economic Operator (EU)
- AEO stands for Annual Energy Outlook (US DoE, EIA)
- AEO stands for African Economic Outlook
- AEO stands for Association for Enterprise Opportunity
- AEO stands for Agricultural Extension Officer (various organizations)
- AEO stands for Association of Exhibition Organisers
- AEO stands for Association of Event Organisers (UK)
- AEO stands for Alpha Epsilon Omega (Armenian fraternity)
- AEO stands for Atomic Energy Organization
- AEO stands for Arranged Employment Opinion (Canada)
- AEO stands for Assistant Executive Officer
- AEO stands for Air Electronics Officer (Royal Air Force)
AEO