| Acronym | Definition |
|---|
| IRHS➣Ironwood Ridge High School (Oro Valley, Arizona) |
| IRHS➣Indian River High School (Delaware and Virginia) |
| IRHS➣Indoor Residual House Spraying |
| IRHS➣International Road Haulage Survey (UK) |
| IRHS➣Indian Rivers Humane Society (Aylett, VA) |
| IRHS➣Iron Range Historical Society (est. 1973; Gilbert, MN) |
| IRHS➣International Reproductive Health Survey |