| Abbreviation | Definition |
|---|---|
| HYA | Hampton Youth Association |
| HYA | Harrisburg Youth Association |
| HYA | Hempfield Youth Association |
| HYA | Homeless Youth Alliance |
| HYA | Hopewell Youth Association |
| HYA | Hyderabad Youth Assembly |
| HYACC | Hyannis Youth and Community Center |
| HYB | Hampshire Youth Bureau |
| HYB | Hillsboro Youth Basketball |
| HYB | Hudson Youth Baseball |
| HYBA | Haddonfield Youth Basketball Association |
| HYBA | Hampden Youth Baseball Association |
| HYBA | Hermiston Youth Basketball Association |
| HYBA | Hershey Youth Basketball Association |
| HYBA | Hopedale Youth Baseball Association |
| HYBA | Howard Youth Basketball Association |
| HYBA | Howard Youth Basketball Association's |
| HYBA | Huron Youth Basketball Association |
| HYBA | Hutchinson Youth Basketball Association |
| HYC | Havurah Youth Center |