| Acronym | Definition |
|---|
| OSH | Occupational Safety and Health |
| OSH | Orchard Supply Hardware |
| OSH | Office on Smoking and Health |
| OSH | One Semester Hour (various schools) |
| OSH | Oregon State Hospital |
| OSH | Open Source Host |
| OSH | Old Stone House (various locations) |
| OSH | Operational Support Hub (Canada and Jamaica) |
| OSH | Outside Hospital |
| OSH | Operator Shell |
| OSH | Office of Safety and Health |
| OSH | Optimal Separating Hyperplane |
| OSH | Operator Station Human System Interface (US DoD) |
| OSH | Osseo Senior High School (Osseo, MN) |
| OSH | Oshkosh, WI, USA - Wittman Field (Airport Code) |
| OSH | Object State Holder (computer programming) |
| OSH | Ottawa South Highspeed (internet service provider; Ontario, Canada) |
| OSH | Ohio State Hooligans (skinhead group) |
| OSH | Oryza Sativa Homeobox (gene) |
| OSH | Ownship's Heading |
| OSH | Order of the Silver Hand (game) |