| Abbreviation | Definition |
|---|---|
| IPVU | Instituto Provincial de Vivienda y Urbanismo |
| IPVW | Instituut voor Permanente Vorming in de Wetenschappen |
| IQ | Ignorant Question |
| IQAT | Interactive Quality Assessment Tool |
| IQB | Indiana Quiz Bowl |
| IQSS | Institute for Quantitative Social Science |
| IR | In Relation |
| IR | Institutional Research |
| IRA | Individual Retirement Account |
| IRB | Institutional Review Board |
| IRBM | Institute for Research in Business Management |
| IRC | I Repeat Classes |
| IRC | Inter-Residence Council |
| IRFS | Institute of Retail Fashion Studies |
| IRGB | International Relations Global Business |
| IRI | Indiana Robotics Invitational |
| IRI | Interactive Remote Instruction |
| IRIG | Intramural Research Incentive Grant |
| IRIS | Illinois Researcher Information Service |
| IRIS | Institute for Robotics and Intelligence Systems |