| Acronym | Definition |
|---|
| AUI | Acting under the Influence |
| AUI | Attachment Unit Interface |
| AUI | Associated Universities, Inc (Washington, DC) |
| AUI | Administration User Interface (software) |
| AUI | Agricultural University of Iceland (est. 2005) |
| AUI | Adapter Unit Interface |
| AUI | Abstract User Interface |
| AUI | Audio User Interface |
| AUI | Aural User Interface |
| AUI | Ukraine International Airlines (ICAO code) |
| AUI | Action d'Urgence Internationale (French: International Emergency Action; disaster relief) |
| AUI | Al Akhawayn University in Ifrane (Morocco) |
| AUI | Access Unit Interface |
| AUI | Association des Utilisateurs d'Internet (French: Association of Internet Users) |
| AUI | Alianza Unida Iraquí (Iraq) |
| AUI | Adaptable User Interface |
| AUI | Application User Interface (IEEE 802.3) |
| AUI | Attentive User Interface |
| AUI | Autosub Under Ice (UK) |
| AUI | Attachment User Interface |
| AUI | Audible User Interface |
| AUI | Auxiliary Unit Interface |
| AUI | Asset Utilization Index |
| AUI | Adoptions Unlimited, Inc. (Chino, CA) |
| AUI | Auxiliary User Interface |
| AUI | Archiver User Interface |
| AUI | Applicant User Interface |
| AUI | Advanced Unmanned Interceptor |
| AUI | ASCII User Interface |
| AUI | Asynchronous Universal Interface |
| AUI | Agent Underwriting Inquiry |
| AUI | Active User Identification |
| AUI | ASCII/ANSI User Interface |
| AUI | Agency Underwriting Information (State Farm Insurance) |
| AUI | Arbitrary Unit of Intensity |