| IHR | I Heart Radio 
| Others |
| IHR | Ideal Home Range
| Others |
| IHR | Indian Historical Review
| Others |
| IHR | Individual Health Record
| Others |
| IHR | Infection and Host Response
| Others |
| IHR | Innovation and Human Rights
| Others |
| IHR | Institute for Health and Recovery
| Others |
| IHR | Institute for Health Research
| Others |
| IHR | Institute for Historical Review
| Others |
| IHR | Institute for Human Reproduction
| Others |
| IHR | Institute for Human Resources
| Others |
| IHR | Institute for Human Rights
| Others |
| IHR | Institute for Humanities Research
| Others |
| IHR | Institute of Historical Research
| Others |
| IHR | Integrated Heater Control
| Others |
| IHR | Integrative Health Resources
| Others |
| IHR | Intensity of Heat Radiation
| Others |
| IHR | Interactive Health Record
| Others |
| IHR | Interactive Hypertext Response
| Others |
| IHR | Internal Health Regulations
| Others |
| IHR | International Health Regulations
| Health, Legal, Medical |
| IHR | International Hedgehog Registry
| Others |
| IHR | International HETL Review
| Others |
| IHR | International Human Rights
| Others |
| IHR | International Hunting Reticle
| Others |
| IHR | International Hydrographic Review
| Others |
| IHR | Internet Health Report
| Others |
| IHR | Internet Health Resources
| Others |
| IHR | Internet History Resources
| Others |
| IHR | Intra Hospital Referral
| Others |
| IHR | Intrinsic heart rate
| Others |
| IHR | Ionic Hair Retexturising
| Others |
| IHR | Irish Horse Register
| Others |