IUAA
| Acronym | Definition |
|---|---|
| IUAA | Indiana University Alumni Association |
| IUAA | Irish Universities Athletics Association (est. 1873) |
| IUAA | International Union of Advertisers Associations (est. 1953; now World Federation of Advertisers) |
| IUAA | International Union of Alpine Associations |
| IUAA | Illinois Uniform Arbitration Act |
| IUAA | Inner Urban Areas Act (UK) |