| OHSC | Oak Hollow Sailing Club 
| Others |
| OHSC | Oakton High School Class
| Others |
| OHSC | Occupational Health and Safety Center
| Others |
| OHSC | Occupational Health and Safety Centre
| Others |
| OHSC | Occupational Health and Safety Commission
| Others |
| OHSC | Occupational Health and Safety Committee
| Others |
| OHSC | Occupational Health and Safety Council
| Others |
| OHSC | Occupational Health Safety and Compensation
| Others |
| OHSC | Occupational Health Safety Course
| Others |
| OHSC | Occupational Health Smart Card
| Others |
| OHSC | Occupational Health Smart Cards
| Others |
| OHSC | Occupational Heath and Safety Consultants
| Others |
| OHSC | Occupstional Health and Safety Communication
| Others |
| OHSC | Of Hours School Care
| Others |
| OHSC | of the Health Services Commissioner
| Others |
| OHSC | of the Health Standard Compliance
| Others |
| OHSC | Office Of Health Standards Compliance
| Others |
| OHSC | Office of Health System Collaboration
| Others |
| OHSC | Office of the Health Services Commissioner
| Others |
| OHSC | Official HardShell Case
| Others |
| OHSC | Ontario Healthy Schools Coalition
| Others |
| OHSC | Ontario Hydro Services Company
| Others |
| OHSC | Oregon Health Sciences Center
| Others |
| OHSC | Oregon Homeschool Science Club
| Others |
| OHSC | Organotypic Hippocampal Slice Cultures
| Others |
| OHSC | Original Hard Shell Case
| Others |
| OHSC | Ouran High School Club
| Others |
| OHSC | Out of Hours School Care
| Others |
| OHSC | Oxford Home Study Center
| Others |
| OHSC | Oxford Home Study College
| Others |