| IHS | I Hate School 
| Others |
| IHS | I Have Suffered
| Others |
| IHS | I Hope So
| Others |
| IHS | I've Heard Several
| Others |
| IHS | IBM HTTP Server
| Others |
| IHS | Idaho Humane Society
| Others |
| IHS | Iehus Hominum Salvator
| Others |
| IHS | Iesus Hominum Salvator
| Others |
| IHS | Ieusus Hominum Salvator
| Others |
| IHS | Imaging Healthcare Specialists
| Others |
| IHS | In His Service
| Others |
| IHS | In His Steps
| Others |
| IHS | In Hoc Signo
| Others |
| IHS | In Home Systems
| Others |
| IHS | In House Specification
| Others |
| IHS | Incident Handling Standards
| Others |
| IHS | Independence High School
| Others |
| IHS | Independent High School
| Others |
| IHS | Indian Health Service
| Others |
| IHS | Indian Health Service (DHHS)
| Others |
| IHS | Indian Health Service (HHS)
| Others |
| IHS | Indian Health Services
| Others |
| IHS | Indiana Historical Society
| Others |
| IHS | Infinitum Humanitarian Systems
| Others |
| IHS | Information Handling Services
| Others |
| IHS | Information Handling Services, Inc.
| Others |
| IHS | Infrared Heat System
| Others |
| IHS | Innovation Hot Springs
| Others |
| IHS | Innovative Health Solutions
| Others |
| IHS | Institute for Highway Safety
| Others |
| IHS | Institute for Housing Studies
| Others |
| IHS | Institute for Human Services
| Others |
| IHS | Institute for Humane Studies
| Others |
| IHS | Institute of Health Sciences
| Others |
| IHS | Intake Hose
| Others |
| IHS | Integrated Health Services
| Others |
| IHS | Integrated Health Systems
| Others |
| IHS | Integrated Heat Spreader
| Others |
| IHS | Integrity Humanity and Scholarship
| Others |
| IHS | Intelligent Headlight System
| Others |
| IHS | Intelligent Highway Solutions
| Others |
| IHS | Intelligent Highway Systems
| Others |
| IHS | Intensity, Hue, and Saturation
| Others |
| IHS | Intermediate Health Status
| Others |
| IHS | Internal Health Services
| Others |
| IHS | Internal Hip Syndrome
| Others |
| IHS | Internal Hostile Structured
| Others |
| IHS | International Harvester Scout
| Others |
| IHS | International Headache Society
| Others |
| IHS | International Health Service
| Others |
| IHS | International Health Services
| Others |
| IHS | International Health Specialist
| Others |
| IHS | International Hearing Society
| Others |
| IHS | International Herpetological Society
| Others |
| IHS | International Herpetological Symposium
| Others |
| IHS | International Horn Society
| Others |
| IHS | Internet Home School
| Others |
| IHS | Interstate Highway System
| Others |
| IHS | Irvine High School
| Others |
| IHS | Isis Horus and Set
| Others |
| IHS | Isis Horus Seb
| Others |
| IHS | Isis Horus Set
| Others |
| IHS | Issaquah High School
| Others |