| Name | # Entries |
|---|---|
| Young | 2364 |
| Yates | 391 |
| Yang | 249 |
| Yee | 180 |
| Yu | 137 |
| York | 95 |
| Yorke | 85 |
| Yeoman | 81 |
| Yardley | 75 |
| Youngman | 69 |
| Yule | 65 |
| Ye | 60 |
| Yoo | 56 |
| Yeo | 54 |
| Yan | 51 |
| Yaxley | 48 |
| Yoon | 48 |
| Yip | 39 |
| Yong | 35 |
| You | 35 |
| Yi | 34 |
| Yearbury | 33 |
| Yon | 31 |
| Yeates | 30 |
| Yeung | 29 |
| Younger | 29 |
| Yap | 27 |
| Yende | 26 |
| Youth | 25 |
| Yarrall | 22 |
| Yin | 22 |
| Yeatman | 21 |
| Yusuf | 20 |
| Yelavich | 20 |
| Yacoob | 19 |
| Yao | 19 |
| Yuen | 19 |
| Y | 18 |
| Yun | 16 |
| Yuan | 15 |
| Yeni | 15 |
| Yeats | 14 |
| Yunus | 14 |
| Yim | 14 |
| Yummy | 14 |
| Youn | 14 |
| Youngs | 12 |
| Yam | 12 |
| Yeh | 12 |
| Ying | 12 |
| Yung | 11 |
| Your | 11 |
| Yovich | 11 |
| Yarrow | 11 |
| Yukich | 10 |
| Yau | 10 |
| Yen | 10 |
| Yako | 10 |
| Yawa | 10 |
| Yha | 9 |
| Yellow&Reg; | 9 |
| Yuill | 9 |
| Yandall | 8 |
| Youngson | 8 |
| Yeadon | 8 |
| Yousif | 8 |
| Yearsley | 8 |
| Yakas | 7 |
| Yeomans | 7 |
| Yoko | 7 |
| Yelland | 7 |
| Yadav | 7 |
| Young's | 7 |
| Yendell | 6 |
| Yanez | 6 |