English abbreviations from ihsa to iihl
- IHSA (Idaho Head Start Association)
- IHSB (Indiana High School Bowling)
- IHSBMA (International Honor Society for Business, Management, and Administration)
- IHSI (Institutum Historicum Societatis Iesu (Jesuit Historical Institute))
- IHSOFMN (International Health Service of Minnesota)
- IHS Pakistan (Integrated Health Services, Pakistan)
- IHT (Ideal Handler Time)
- IHTFP (I Have Taken Freshman Physics)
- IHU (Ihu Airport)
- IHV (Integrated Hole Volume (of Borehole) (in Cubic Metres))
- IHW ((organization) International Halley Watch, an organization created to coordinate observations of Halley's Comet in 1986)
- II (image intensification/intensifier)
- IIA (Inishmaan Airport)
- IIASA (International Institute for Applied System Analysis)
- IIB (Interagency Information Bureau)
- IIC (International Institute of Communications)
- IICA (Inter-American Institute for Cooperation on Agriculture)
- IICL (Institute of International Container Lessors)
- IICR (Institute for Intellectual Capital Research)
- IICRC (Ishikawa International Cooperation Research Centre)
- IICWG (International Interoperability Control Working Group)
- IID (Independent and Identically Distributed)
- IIE (Innovative Interstellar Explorer)
- IIEP (International Institution Exchange Program)
- IIFAR (Incurably Ill For Animal Research)
- IIFC (Islamic International Foundation of Cooperation)
- IIFM (Indian Institute of Forest Management)
- IIGT (International Institute of Greater Toledo)
- Iih (Input High Current)
- IIHF (International Ice Hockey Federation)
- IIHL (International Ice Hockey Federation)