Found 7 full forms for HYY
| Term | Full Form | Category |
|---|---|---|
| HYY | Happy Yipee Yehey 
| Others |
| HYY | Hartge Yacht Yard
| Others |
| HYY | Helsingin yliopiston ylioppilaskunnan
| Others |
| HYY | Helsingin yliopiston ylioppilaskunnassa
| Others |
| HYY | Helsingin Yliopiston Ylioppilaskunta
| Others |
| HYY | House of Yin Yang
| Others |
| HYY | The House Of Yin Yang
| Others |