| YORCK | 1 |
| YORE | 2 |
| YORI | 2 |
| YORI I | 1 |
| YORIA | 1 |
| YORIK | 1 |
| YORIZ | 1 |
| YORK | 18 |
| YORK'S DORA GLADSTONE | 1 |
| YORKA | 1 |
| YORKLEY WISP O'HEATHER | 1 |
| YOSCA | 1 |
| YOSTA | 1 |
| YOSUN | 1 |
| YOTA | 5 |
| YOU | 1 |
| YOUGHI | 1 |
| YOUKETTE | 1 |
| YOUMA | 1 |
| YOUNA | 1 |
| YOUNG KATE | 1 |
| YOUNG ROB ROY | 1 |
| YOUNG ROLLICK | 1 |
| YOUNG WHITE (HARTLEY'S) | 1 |
| YOUPETTE | 1 |
| YOUSI | 1 |
| YOUTE | 1 |
| YOUTTE | 1 |
| YOYO | 1 |
| YOZA | 1 |
| YPRES | 1 |
| YPSILON | 1 |
| YRCA | 1 |
| YRGO | 1 |
| YRIA | 1 |
| YRIS | 3 |
| YS | 1 |
| YSA | 1 |
| YSS | 1 |
| YTACA | 1 |
| YTALIA | 2 |
| YTIS | 1 |
| YTREBOR | 1 |
| YUBA | 3 |
| YUCA | 1 |
| YUCATÁN | 1 |
| YUDA | 1 |
| YUDI | 2 |
| YUGO | 1 |
| YUGOSLAVIA | 1 |
| YUK | 2 |
| YUKA | 3 |
| YUKI | 1 |
| YUKON | 2 |
| YULA | 3 |
| YULEN | 1 |
| YULI | 2 |
| YULIA | 2 |
| YULO | 1 |
| YULY | 1 |
| YUMA | 31 |
| YUMADELQUARTO | 1 |
| YUN | 2 |
| YUNA | 3 |
| YUO | 1 |
| YUPI | 1 |
| YUPPI-DOO | 1 |
| YURI | 9 |
| YURIKA | 1 |
| YURO | 1 |
| YURRE | 1 |
| YURY | 3 |
| YUSS | 1 |
| YUSUFUSTA'DAN APOLLO | 1 |
| YUTA | 2 |
| YUVEY | 1 |
| YUYO | 1 |
| YVECO | 1 |
| YVETTE | 1 |
| YVONNE | 1 |
| YZARA | 1 |