| Acronym | Definition |
|---|
| IHRA➣International Hot Rod Association |
| IHRA➣International Harm Reduction Association |
| IHRA➣International Hotel & Restaurant Association |
| IHRA➣International High-Speed Rail Association (Japan) |
| IHRA➣International Human Rights Association (Delhi, India) |
| IHRA➣International Harmonized Research Activities |
| IHRA➣International Housewares Representatives Association |
| IHRA➣International Human Resources Association |