| Abbreviation | Definition |
|---|---|
| SACY | Supporting And Connecting Youth |
| SAFFY | Social Action for Filipino Youth |
| SAFYA | Somerset Anne Frank Youth Awards |
| SASSY | School After School for Successful Youth |
| SASSY | Service Above Self Student Youth |
| SASSY | Service Above Self Surrey Youth |
| SASSY | Shalom Aleichem Society of Synagogue Youth |
| SASSY | Substance Abuse Support Services For Youth |
| SASSY | Surface Air Supplied Snorkeling For Youth |
| SASY | Scuba Assisted Snorkeling for Youth |
| SASY | Specialised Assistance School for Youth |
| SASY | Supplied Air Snorkeling for Youth |
| SAVOY | Stop All Violence On Youth |
| SAVVY | Student Association of Vegan and Vegetarian Youth |
| SAVVY | Students Against Violence and Victimization of Youth |
| SAVY | Survey and Assessment of Vietnamese Youth |
| SAY | Serious About Youth |
| SAY | Soccer Association for Youth |
| SAY | Social Advocates for Youth |
| SAY | Spirit Of Aboriginal Youth |