| Acronym | Definition |
|---|
| IHO➣International Hydrographic Organization |
| IHO➣In Honor Of |
| IHO➣Impartial Hearing Officer |
| IHO➣Institute of Human Origins (Arizona State University) |
| IHO➣Imperial Hotel, Osaka (Osaka, Japan) |
| IHO➣Intermediate Home Office (various organizations) |
| IHO➣Integrated Health Care Organization |
| IHO➣Industrieverband Hygiene und Oberflächenschutz Für Industrielle und Institutionelle Anwendung eV (German industrial union of hygiene and surface protection for industrial and institutional application) |
| IHO➣Impeded Harmonic Oscillation |
| IHO➣Inorganic Halogen Oxidizer |