| AII | AASHTO Innovation Initiative 
| Others |
| AII | Accident and Incident Investigation
| Others |
| AII | Active Input Interface
| Others |
| AII | Advanced Instruments Inc
| Others |
| AII | Aesthetic and Interpretive Inquiry
| Others |
| AII | Agency for Intercultural and Inter
| Others |
| AII | Agency Intermediaries Inc
| Others |
| AII | Agency Intermediaries Incorporated
| Others |
| AII | Airborne Infection Isolation
| Others |
| AII | Allergy Immunology and Inflammation
| Others |
| AII | Allergy Inflammation and Immunology
| Others |
| AII | Alliance for Innovation and Infrastructure (Aii)
| Others |
| AII | Alloys International Incorporated
| Others |
| AII | American Indian Institute
| Others |
| AII | American Institute of Immunology
| Others |
| AII | American Institute of Inspectors
| Others |
| AII | American International Industries
| Others |
| AII | Analytical Industries Inc
| Others |
| AII | Analytiks International Inc
| Others |
| AII | Angiotensin II AII
| Others |
| AII | Anticipated Increase in Information
| Others |
| AII | Apartment Income Investors
| Others |
| AII | Art Institutes International
| Others |
| AII | Association of Independent Institutions
| Others |
| AII | Attachment Individual Identifier
| Others |
| AII | Auditory Implant Initiative
| Others |
| AII | Australia Indonesia Institute
| Others |
| AII | Auto ID Infrastructure
| Others |