| Name | # Entries |
|---|---|
| Young | 11516 |
| Yu | 2668 |
| Yang Yang | 2555 |
| Yates | 1878 |
| Yang | 990 |
| Yan | 701 |
| Ye | 678 |
| Yeo | 663 |
| Yuan | 659 |
| Yao | 637 |
| Yap | 632 |
| Yeung | 615 |
| York | 613 |
| Yong | 598 |
| Yee | 558 |
| Yoon | 483 |
| Yip | 483 |
| Yi | 469 |
| Younger | 447 |
| Yun | 415 |
| Yoo | 382 |
| Youssef | 378 |
| You | 364 |
| Yin Yin | 359 |
| Yen | 359 |
| Yate | 330 |
| Yeomans | 309 |
| Yeates | 280 |
| Younan | 280 |
| Yau | 273 |
| Yin | 266 |
| Yan Yan | 252 |
| Yeh | 252 |
| Yule | 221 |
| Yarrow | 220 |
| Yousif Yousif | 218 |
| Yilmaz | 199 |
| Yardley | 193 |
| Yung | 192 |
| Yeoh | 188 |
| Yue | 181 |
| Yim | 179 |
| Yeoman | 171 |
| Yuen | 159 |
| Ying Ying | 158 |
| Yamada | 151 |
| Yarnold | 150 |
| Youngman | 148 |
| Yadav | 146 |
| Yacoub | 139 |
| Yousif | 138 |
| Youd | 137 |
| Yelland | 137 |
| Younes | 134 |
| Yiu | 133 |
| Yorke | 132 |
| Yaxley | 119 |
| Ying | 117 |
| Yam | 113 |
| Youl | 112 |
| Yusuf Yusuf | 112 |
| Younis | 106 |
| Yew | 99 |
| Yusuf | 98 |
| Yeap | 96 |
| Yalda | 91 |
| Yeu | 89 |
| Yabsley | 89 |
| Yeatman | 88 |
| Yamamoto | 87 |
| Yarwood | 86 |
| Youkhana | 85 |
| Yeaman | 85 |
| Yousef | 84 |
| Yeats | 83 |