YSS
| Acronym | Definition |
|---|---|
| YSS | Youth Support Services (various locations) |
| YSS | Youth Services Section (New York Police Department; New York, NY) |
| YSS | You Suck Severely |
| YSS | Youth and Shelter Services, Inc (Ames, IA) |
| YSS | You're So Slow |
| YSS | Yanic Simard Selected (Toronto Interior Design Group; Toronto, Canada) |
| YSS | You're So Sweet |
| YSS | You're So Smart |
| YSS | Young Spectroscopist Symposium (South Africa) |
| YSS | Yemeni Student Society |
| YSS | Yaw Sun Sensor |