IIRA
| Acronym | Definition |
|---|---|
| IIRA | International Industrial Relations Association |
| IIRA | Illinois Institute for Rural Affairs (Western Illinois University) |
| IIRA | Islamic International Rating Agency (credit rating) |
| IIRA | Iron Indian Riders Association (motorcycles) |
| IIRA | Illegal Immigration Relief Act (Hazelton, PA) |
| IIRA | Ipertesti, Internet E Ricerca Agraria |
| IIRA | Integrated Inertial Reference Assembly |