| Acronym | Definition |
|---|
| UIA | Universidad Iberoamericana (México) |
| UIA | Union Internationale des Avocats (French: International Association of Lawyers) |
| UIA | Union of International Associations |
| UIA | Unión Industrial Argentina |
| UIA | United Inventors Association |
| UIA | Under the Influence of Alcohol |
| UIA | University of Antwerp |
| UIA | Union Internationale des Architectes (French: International Union of Architects) |
| UIA | United Iraqi Alliance |
| UIA | Unemployment Insurance Agency (Michigan) |
| UIA | Umts Integrity Algorithm |
| UIA | Uganda Investment Authority |
| UIA | Ukraine International Airlines |
| UIA | United Israel Appeal |
| UIA | user interface automation |
| UIA | Universidad Internacional de las Americas |
| UIA | Ukrainian Insurgent Army |
| UIA | United Interfaith Action (Massachusets) |
| UIA | Ultrasonic Industry Association |
| UIA | University of Indianapolis Athens (Athens, Greece) |
| UIA | Used in Action |
| UIA | Unassigned Integer Arithmetic |
| UIA | Unit Identification Application |
| UIA | Unit-Invariant Abelian (code) |