IHRS
| Acronym | Definition |
|---|---|
| IHRS | Indiana Historical Radio Society |
| IHRS | Impartial Hearing Reporting System |
| IHRS | Indiana House Rabbit Society |
| IHRS | Institute for Horticultural and Rural Studies (UK) |
| IHRS | Indian Heart Rhythm Society |
| IHRS | Iraqi Human Rights Society |
| IHRS | Innovative Human Resources Solutions, LLC (Wilmington, North Carolina) |
| IHRS | Ionia Hot Rod Shop (Michigan) |