| Acronym | Definition |
|---|
| OHSA➣Occupational Health and Safety Act (various countries) |
| OHSA➣Occupational Health Services Australia |
| OHSA➣Occupational Health and Safety Agency (Health Canada) |
| OHSA➣Occupational Health and Safety Association (various locations) |
| OHSA➣Oxidized Human Serum Albumin (biochemistry) |