| Name | # Entries |
|---|---|
| Zhang | 278 |
| Zhou | 140 |
| Zhu | 95 |
| Zhao | 65 |
| Zimmerman | 62 |
| Zitha | 55 |
| Zheng | 42 |
| Zikhali | 34 |
| Zaaiman | 32 |
| Zhong | 29 |
| Zeng | 27 |
| Zander | 24 |
| Zimu | 23 |
| Zwart | 22 |
| Zame | 17 |
| Zenith | 16 |
| Zimba | 16 |
| Zweni | 15 |
| Zibi | 15 |
| Zimri | 15 |
| Zuydam | 15 |
| Zaal | 14 |
| Zetler | 13 |
| Ziera | 13 |
| Zoghby | 13 |
| Zuppicich | 11 |
| Zeiler | 11 |
| Zimmermann | 11 |
| Zen | 11 |
| Ziqubu | 10 |
| Zitzke | 10 |
| Zwan | 10 |
| Ziegler | 9 |
| Zonneveld | 9 |
| Zaia | 9 |
| Zou | 9 |
| Z | 8 |
| Zondani | 8 |
| Zhen | 8 |
| Zero | 8 |
| Zhan | 8 |
| Zion | 8 |
| Zakwe | 7 |
| Zeegers | 7 |
| Zim | 7 |
| Zentveld | 7 |
| Zalgaonkir | 7 |
| Zuke | 7 |
| Zebra | 7 |
| Zambesi | 6 |
| Zehnder | 6 |
| Zide | 6 |
| Zantsi | 6 |
| Zozi | 6 |
| Zandbergen | 6 |
| Ziehl | 6 |
| Zamisa | 6 |
| Zealandia | 6 |
| Zincke | 6 |
| Zanten | 6 |
| Zindela | 5 |
| Zini | 5 |
| Zimmer | 5 |
| Zurich | 5 |
| Zidel | 5 |
| Zeal | 5 |
| Zill | 5 |
| Zililo | 5 |
| Zwick | 5 |
| Zervas | 5 |
| Zulman | 5 |
| Zwies | 5 |
| Zlotnick | 5 |
| Zono | 5 |
| Zinsli | 5 |