SYO
| Acronym | Definition |
|---|---|
| SYO | Sydney Youth Orchestra |
| SYO | Stuff Your Own |
| SYO | Suffolk Youth Orchestra (UK) |
| SYO | South Yorkshire Orienteers (UK) |
| SYO | Shonai, Japan - Shonai (Airport Code) |
| SYO | Saskatoon Youth Orchestra (Canada) |
| SYO | Smoke You Out |
| SYO | See You Online (chat) |