| Abbreviation | Definition |
|---|---|
| YARL | Yakima Agricultural Research Laboratory |
| YBF | Young Black Farmers |
| YBFA | Young Black Farmers Association |
| YDV | Yeast-derived Hepatitis B Vaccine |
| YEP | Youth Exchange Programme |
| YMCA | Young Men's Christian Association |
| YMIA | Young Men's Indian Association |
| YST | Yolk sac tumour |
| YWCA | Young Women's Christian Association |