| Acronym | Definition |
|---|
| YOS➣Yosemite (Amtrak station code; Yosemite, CA) |
| YOS➣Years Of Service |
| YOS➣Oil Storage Barge (Non Self-Propelled) |
| YOS➣Your Operating System |
| YOS➣Your Obedient Servant (closing salutation chiefly 18th century British) |
| YOS➣Yahoo Online Status (Yahoo Messenger) |
| YOS➣District Barge, Oil Storage (US Navy) |
| YOS➣Yttrium Ortho-Silicate |