| IHA | I Hate Acronyms 
| Others |
| IHA | Idaho Hospital Association
| Others |
| IHA | Idiopathic hyperaldosteronism
| Others |
| IHA | Illinois Hospital Association
| Others |
| IHA | Immaculate Heart Academy
| Others |
| IHA | Immediate Health Associates
| Others |
| IHA | Immediate Home Accommodation
| Others |
| IHA | Imperial Heavy Arms
| Others |
| IHA | Imperial Household Agency
| Others |
| IHA | In Home Advisor
| Others |
| IHA | Incidental Harassment Authorization
| Others |
| IHA | Independence Hall Association
| Others |
| IHA | Independent Hauler Association
| Others |
| IHA | Independent Health Association
| Others |
| IHA | Indiana Hospital Association
| Others |
| IHA | Indianapolis Housing Agency
| Others |
| IHA | Indicators of Hydrologic Alteration
| Others |
| IHA | Indirect Hemagglutination Assay
| Others |
| IHA | Institute for Health Aging
| Others |
| IHA | Institute for Healthcare Advancement
| Others |
| IHA | Integrated Healthcare Association
| Others |
| IHA | Intel Hub Architecture
| Others |
| IHA | Intelligent Headlight Assist
| Others |
| IHA | Interethnic Health Alliance
| Others |
| IHA | Interface Hazard Analysis
| Others |
| IHA | Interfaith Housing Alliance
| Others |
| IHA | Interior Health Authority
| Others |
| IHA | International Headache Academy
| Others |
| IHA | International Hedgehog Association
| Others |
| IHA | International Horsemanship Association
| Others |
| IHA | International Hotel Association
| Others |
| IHA | International Hotels Association
| Others |
| IHA | International Housewares Association
| Others |
| IHA | International Housing Association
| Others |
| IHA | International Hydropower Association
| Others |
| IHA | International Hyperbarics Association
| Others |
| IHA | International Hypnosis Association
| Others |
| IHA | Internet Holiday Ads
| Others |
| IHA | Iowa Hospital Association
| Others |
| IHA | Islip Horsemen's Association
| Others |
| IHA | Niihama, Japan
| Others |