ONHS
| Acronym | Definition |
|---|---|
| ONHS | Olathe North High School (Olathe, KS) |
| ONHS | Oshkosh North High School (Wisconsin) |
| ONHS | Olive Natural Heritage Society (West Shokan, NY) |
| ONHS | Occupational Noise and Hearing Survey (NIOSH) |
| ONHS | Oxford Natural Heritage Study (Canada) |