SYSS
| Acronym | Definition |
|---|---|
| SYSS | School of Youth for Social Services (Saigon, Vietnam) |
| SYSS | Sing Yin Secondary School (Hong Kong) |
| SYSS | South Yorkshire Shooting Supplies (England, UK) |
| SYSS | Santa Yalla Support Society (Gambia) |
| SYSS | See You Sometime, Somewhere |