SYS
| Acronym | Definition |
|---|---|
| SYS | System(s) |
| SYS | System Configuration (File Name Extension) |
| SYS | See You Soon |
| SYS | System File |
| SYS | Sun Yat-Sen (founder of Republic of China) |
| SYS | Sarasota Youth Sailing (Sarasota, FL) |
| SYS | State Your Source (Internet slang) |
| SYS | Stretch-Yawn Syndrome |
| SYS | Southwest Youth Symphony |
| SYS | Sesli Yanýt Sistemleri (Turkish: Voice Response System) |
| SYS | Salford Youth Service (UK) |