| Abbreviation | Definition |
|---|---|
| YTT | Youth Team Tournament |
| YVCA | Yarra Valley Cricket Association |
| YVH | Yadkin Valley Hounds |
| YVL | Youth Volleyball League |
| YVN | Yoga Vidya Niketan |
| YW | Youth Walk |
| YWAA | Young World Athletic Association |
| YWC | Youth Wrestling Club |
| YWD | Young Women's Division |
| YWF | Yonkers Wrestling Federation |
| YWF | Youth Wrestling Federation |
| YXC | Youth Cross Country |
| YYC | Yealm Yacht Club |
| YYC | Youngstown Yacht Club |
| Z | Zapped |
| Z | Zing |
| ZAP | Zany Award Points |
| ZAT | Zonal Academy Tournament |
| ZAT | Zone Advancement Tournament |
| ZB | Zone Ball |