| Acronym | Definition |
|---|
| IIRC | If I Recall/Remember Correctly |
| IIRC | Interactive Illinois Report Card |
| IIRC | International Integrated Reporting Council |
| IIRC | If I Read Correctly |
| IIRC | Ito International Research Center (University of Tokyo; Japan) |
| IIRC | If I Really Cared |
| IIRC | Image and Identity Research Collective |
| IIRC | If I Recollect Correctly |
| IIRC | Impedance Imaging Research Center (Korea) |
| IIRC | If It Really Counts |
| IIRC | International Internet Recruiting Consultants, Inc. |
| IIRC | International Inter-Society Research Committee (on Nuclear Codes and Standards) |
| IIRC | Internet Information Research Center |
| IIRC | Iraqi Islamic Reconciliation Conference |
| IIRC | Immunity and Infection Research Centre |
| IIRC | Interstate Insurance Receivership Compact |
| IIRC | In Internet Relay Chat |
| IIRC | Information Integrity Research Centre (UK) |
| IIRC | International Interpretation Resource Center |
| IIRC | International Interdisciplinary Research Colloquium |
| IIRC | Inactive Item Review Code (US DoD) |
| IIRC | Isn't It Really Cool |
| IIRC | IVF & Infertilty Research Centre (Calcutta, India) |