| Acronym | Definition |
|---|
| OSMS➣Open Source Middleware Stack |
| OSMS➣Open System Managed Storage |
| OSMS➣Otago School of Medical Sciences (University of Otago; Dunedin, New Zealand) |
| OSMS➣Ocean Springs Middle School (Mississippi) |
| OSMS➣Omega Steel and Marine Services (Philippines) |
| OSMS➣Online Sales and Marketing Services |
| OSMS➣One Stop Merchant Services (credit card processing) |
| OSMS➣Oceanship Management Services |
| OSMS➣Optically Selected Mass Spectrometry |
| OSMS➣Oregon Sustainment Maintenance Site |
| OSMS➣Own Ship Motion Sensor |