IOHA
| Acronym | Definition |
|---|---|
| IOHA | International Occupational Hygiene Association |
| IOHA | International Oral History Association |
| IOHA | Irish Olympic Handball Association (Dublin, Ireland) |
| IOHA | Idaho Oral Health Alliance (est. 1998) |
| IOHA | Integrated Operational Hazards Analysis |