Font size:
| OS/360 | IBM 360 operating system (1960s) | |
| OS1 | Operations Specialist Petty Officer 1st Class | |
| OS1 | Officer's Steward 1st Class (non Petty Officer) | |
| OS2 | OS/2 Important File | |
| OS2 | Operating System/2 | |
| OS2 | Ordinary Seaman 2nd Class | |
| OS2 | Officer's Steward 2nd Class (non Petty Officer | |
| OS2 | Operations Specialist Petty Officer 2nd Class | |
| OS2 | Operating System Two | |
| OS3 | Officer's Steward 3rd Class (non Petty Officer) | |
| OS3 | Operations Specialist Petty Officer 3rd Class | |
| OS3B | Open Software Blanc Bleu Belge | |
| OSA | Office of the Secretary of the Army | |
| OSA | Operational Support Airlift | |
| OSA | Open System Architecture | |
| OSA | Osaka, Japan | |
| OSA | Osage | |
| OSA | Office Systems Architecture | |
| OSA | Open System Architecture | |
| OSA | Observability Subspace Algorithm | |
| OSA | Office of Special Affairs | |
| OSA | Omnibus Service Authority | |
| OSA | Office Support Assistant | |
| OSA | Orangutans Seem Alert | |
| OSA | Order of Saint Augustine |
Discuss these OS abbreviations with the community:
Report Comment
We're doing our best to make sure our content is useful, accurate and safe.
If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly.
Attachment
You need to be logged in to favorite.
Log In