| Acronym | Definition |
|---|
| OSAT | Outsourced Semiconductor Assembly and Test (manufacturing) |
| OSAT | Outsourced Semiconductor Assembly and Test |
| OSAT | Out of Service Analog Test |
| OSAT | On-Site Assessment and Training |
| OSAT | One Step At a Time (outdoor activity club) |
| OSAT | Office for the Study of Automotive Transportation |
| OSAT | Out-of-Service Analog Test (US DoD) |
| OSAT | Outsourced Assembly and Test |
| OSAT | One Step At a Time (George Strait album) |
| OSAT | Oklahoma Subject Area Test (Oklahoma public school teachers testing) |
| OSAT | Overall Satisfaction |
| OSAT | Ozone Source Apportionment Technology |
| OSAT | On-Site Acceptance Test |
| OSAT | Open Source Appropriate Technology |
| OSAT | Over Seas Annual Tour (US Air Force Reserve) |