| Acronym | Definition |
|---|
| HYS | High Yield Savings (bank account) |
| HYS | Hershey (stock) |
| HYS | Have Your Say (BBC online debate forum) |
| HYS | Healthy Youth Survey (State of Washington) |
| HYS | Have You Seen (entertainment slang) |
| HYS | Help Your Self |
| HYS | Houston Youth Symphony (Houston, TX) |
| HYS | Hays, KS, USA - Hays Municipal Airport (Airport Code) |
| HYS | Hawaii Youth Symphony (Honolulu, HI) |
| HYS | Handsome Young Son (wallet retailer; Hawaii) |
| HYS | Homeless Youth Services (various locations) |
| HYS | Harvard, Yale, and Stanford (top law schools) |
| HYS | Hispanic Youth Symposium |
| HYS | Here's Your Sign |
| HYS | Helsingin Ylioppilas Salamurhaajat (Finnish: Student Union of Helsinki Assassins; University of Helsinki; Helsinki, Finland) |
| HYS | Hanseatische Yachtschule (German: Hanseatic Yachting School) |
| HYS | Hamble Yacht Services Ltd (UK) |
| HYS | Hillsong Youth Services |