OMSB
| Acronym | Definition |
|---|---|
| OMSB | Oman Medical Speciality Board |
| OMSB | Osaka Municipal Symphonic Band (Osaka, Japan) |
| OMSB | Ohio-Manipal School of Business (India) |
| OMSB | Owner-Managed Small Businesses (Canada) |
| OMSB | Oregon Mutual Savings Bank (Portland, OR) |
| OMSB | Oilserve Marine Sdn. Bhd. |