| Abbreviation | Definition |
|---|---|
| SWAY | South West Atlanta Youth |
| SWAY | Southwest Washington Advocates for Youth |
| SWAY | Sudbury Wembley Alperton Youth |
| SWAY | Survey of War Affected Youth |
| SWY | Ship for World Youth |
| SWY | Sweden World Youth |
| SY | Sonic Youth |
| SYA | Salisbury Youth Association |
| SYA | Smithsburg Youth Athletics |
| SYA | Southampton Youth Association |
| SYA | Southwestern Youth Association |
| SYA | Summer Youth Academy |
| SYAD | Shiromani Youth Akali Dal |
| SYAH | SIDS Youth AIMS Hub |
| SYAP | Summer Youth Activity Program |
| SYAP | Summer Youth Apprenticehip Program |
| SYAP | Summer Youth Art Program |
| SYB | Shelby Youth Ball |
| SYB | Shelby Youth Baseball |
| SYB | Simi Youth Baseball |