| Acronym | Definition |
|---|
| HIRT➣Hitachi Incident Response Team (est. 1998) |
| HIRT➣Hazardous Incident Response Team (various locations) |
| HIRT➣Head Injury Retrieval Trial (clinical trial) |
| HIRT➣High Intensity Resistance Training |
| HIRT➣Hurricane Intercept Research Team |
| HIRT➣High Reynolds Number Tunnel |