| YC | Young Conservative; Yeomanry Cavalry |
| YCNAC | Young Conservatives National Advisory Committee |
| Yeo | Yeomanry |
| YHA | Youth Hostels Association |
| YMCA | Young Men's Christian Association |
| Yorks | Yorkshire |
| yr | younger |
| yrs | years |
| yst | youngest |
| YWCA | Young Women's Christian Association |