- AEI stands for American Enterprise Institute
- AEI stands for Albert Einstein Institute
- AEI stands for Archive of European Integration
- AEI stands for ARDA (American Resort Development Association) Education Institute
- AEI stands for Australian Education International
- AEI stands for Automotive Engineering International
- AEI stands for Architectural Engineering Institute (Washington, DC)
- AEI stands for Australian Education Index
- AEI stands for Alpha Europe Immobilier (French real estate agency)
- AEI stands for American Entomological Institute (Gainesville, FL)
- AEI stands for Alliance Ecologiste Indépendante (French: Independent Ecologist Alliance)
- AEI stands for Asset Enhancement Initiative (various companies)
- AEI stands for American Eagle Instruments (Missoula, MT)
- AEI stands for Alternative Energy Institute
- AEI stands for Affiliated Engineers Inc.
- AEI stands for Advanced Energy Initiative
- AEI stands for Advanced Explorations, Inc. (Canada)
- AEI stands for American English Institute
- AEI stands for Assistance Eligible Individual (COBRA rule change under American Reovery and Reinvestment Act of 2009)
- AEI stands for Automatic Equipment Identification
- AEI stands for Average Earnings Index
- AEI stands for Arab Educational Institute
- AEI stands for Air Express International
- AEI stands for Arts and Exhibitions International
- AEI stands for Aircraft Engineers International
- AEI stands for Asia Electronics Industry
- AEI stands for Agence Européenne Immobilière (French: European Real Estate Agency; EU)
- AEI stands for Associazione Elettrotecnica ed Elettronica Italiana (Italian: Italian Association of Electrical Engineering and Electronics)
- AEI stands for Automatisme et Electricité Industrielle (French electrical equipment manufacturer; est. 1988)
- AEI stands for Aerosystems International
- AEI stands for Audubon Expedition Institute
- AEI stands for Albert Ellis Institute
- AEI stands for Access Exchange International
- AEI stands for Analytical Engineering, Inc. (Indiana)
- AEI stands for Asia Europe Institute
- AEI stands for Alleanza Evangelica Italiana
- AEI stands for Air Emissions Inventory
- AEI stands for Active Enterprise Intelligence (software)
- AEI stands for American Education Institute
- AEI stands for Automotive Environmental Index (JD Power and Associates)
- AEI stands for Asian Energy Institute
- AEI stands for Argentina En La Era de La Informacion
- AEI stands for Associated Electrical Industries, Ltd.
- AEI stands for Adult Education Initiative
- AEI stands for Army Enterprise Infostructure
- AEI stands for Association des Études Internationales (French: International Studies Association)
- AEI stands for Application Enabling Interface (IBM’s term for ALI)
- AEI stands for Aide A l’Enfance de l’Inde (Luxembourg)
- AEI stands for Atomic Energy Insights
- AEI stands for Arts in Education Institute
- AEI stands for Atelier Experimentation et Instrumentation
- AEI stands for Alternative Endoscope Instruments
- AEI stands for Art Educators of Iowa
- AEI stands for Atrial Expansion Index (cardiology)
- AEI stands for Australian Ethical Investment Ltd.
- AEI stands for Appalachian Education Initiative
- AEI stands for Association des Eleves Ingenieurs
- AEI stands for Aisin Electronics Illinois, LLC (Marion, IL)
- AEI stands for After Etch Inspection
- AEI stands for Architectural and Engineering Instructions
- AEI stands for Alpes Embrun Immobilier (French real estate agency)
- AEI stands for Altana Electrical Insulation (Altana Chemie; various locations)
- AEI stands for Academic Excellence International, Ltd. (Taiwan)
- AEI stands for Agencia Europeia de Imprensa
- AEI stands for Association des Etudiants Internationaux (French: International Students Association)
- AEI stands for Aerial Exposure Index
- AEI stands for Annular Epidermolytic Ichthyosis
- AEI stands for Australian Economic Indicators
- AEI stands for Artists Embassy International
- AEI stands for Advanced Ergonomics, Inc.
- AEI stands for Accelerated and Enriched Instruction
- AEI stands for American Eye Institute
- AEI stands for Application Enhancements Inc. (Toronto, Canada)
- AEI stands for Arthur Engineering Inc.
- AEI stands for Advanced Environmental Interface, Inc.
- AEI stands for Alexander Edwards International, Inc.
- AEI stands for Association of Early Intervention
- AEI stands for Association des Étudiants en Informatique
- AEI stands for Atomic Energy Institute (Moscow)
- AEI stands for Amazon Environmental, Inc.
- AEI stands for Aluminium Extrusion Industries (Singapore)
- AEI stands for Armament Enhancement Initiative
- AEI stands for Academia de Evaluación Institucional
- AEI stands for Action Environmental, Inc.
- AEI stands for Allied Engineers, Inc.
- AEI stands for Architect and Engineers, Inc.
- AEI stands for Advanced Endovascular Institute
- AEI stands for Amusement Enterprises, Inc.
- AEI stands for Auxiliar Euro Industrial
- AEI stands for Axe Empowerment Institute
- AEI stands for Azimuth Error Indicator
- AEI stands for Audio End Instrument
- AEI stands for Astro Eight Inches
- AEI stands for Analyste, Exploitation Informatique (employee group in Québec)
- AEI stands for Accountable Equipment Index
- AEI stands for AFMC Enterprise Intranet
- AEI stands for Angle Error Indicator
- AEI stands for Ampul Electric, Inc.
- AEI stands for Air Emissions Industry
- AEI stands for Ateliers d’Échanges et d’Innovation
- AEI stands for Avalanche Electron Injection
- AEI stands for Average Efficiency Index
- AEI stands for l’Action Educative et Innovante
- AEI stands for Alianza Espiritualista Internacional (Spanish)
- AEI stands for Alimentation en Eau Industrielle
AEI