| Acronym | Definition |
|---|
| IHIS➣Interoperability of Heterogeneous Information Systems (workshop; Association for Computing Machinery) |
| IHIS➣Integrated Health Interview Series (Minnesota Population Center) |
| IHIS➣Integrated Healthcare Information System |
| IHIS➣Integrated Hazard Information System (US Department of Homeland Security) |
| IHIS➣International High IQ Society (usually seen as IHIQS) |
| IHIS➣Integrated Hit Indicator System |