OSAS
| Acronym | Definition |
|---|---|
| OSAS | Obstructive Sleep Apnea Syndrome |
| OSAS | Open Systems Accounting Software (Open Systems Holdings Corp., Inc.) |
| OSAS | Once Saved Always Saved |
| OSAS | Of Soldiers and Saints (band) |
| OSAS | Open Source Advance Solutions (Malaysia) |
| OSAS | Occupational Skills Analysis System |
| OSAS | Ohio Scottish Arts School |
| OSAS | Open Substation Automation System (power plants) |
| OSAS | Occupational Sleep Apnea Solutions |