| Name | # Entries |
|---|---|
| Zyl | 1889 |
| Zulu | 813 |
| Zwane | 579 |
| Zuma | 325 |
| Zondi | 311 |
| Zungu | 220 |
| Zondo | 139 |
| Zeelie | 94 |
| Zikhali | 93 |
| Zietsman | 91 |
| Zitha | 84 |
| Zikalala | 69 |
| Zama | 68 |
| Zimu | 54 |
| Zeeman | 52 |
| Zijl | 49 |
| Zaayman | 40 |
| Zhang | 36 |
| Zimmerman | 35 |
| Zandberg | 34 |
| Zondani | 34 |
| Ziqubu | 30 |
| Zimba | 29 |
| Zibi | 25 |
| Zaaiman | 23 |
| Ziegler | 21 |
| Ziervogel | 21 |
| Zakwe | 20 |
| Zwarts | 20 |
| Zweni | 18 |
| Zimmermann | 18 |
| Zhou | 17 |
| Zass | 17 |
| Zantsi | 17 |
| Zondagh | 17 |
| Zindela | 16 |
| Zheng | 16 |
| Zwart | 15 |
| Zhuang | 14 |
| Zhong | 14 |
| Zenzile | 14 |
| Zonke | 14 |
| Zhu | 14 |
| Zinn | 13 |
| Zealand | 13 |
| Zeng | 13 |
| Zaal | 13 |
| Zuppicich | 12 |
| Zaca | 12 |
| Zeederberg | 12 |
| Zuke | 12 |
| Zehnder | 11 |
| Zee | 11 |
| Zwartz | 11 |
| Zander | 11 |
| Zacharias | 11 |
| Zhao | 11 |
| Zide | 10 |
| Zame | 10 |
| Zamisa | 10 |
| Zihlangu | 9 |
| Zaloum | 9 |
| Zammit | 9 |
| Zeier | 9 |
| Ziman | 9 |
| Zulch | 9 |
| Zozi | 9 |
| Zinto | 9 |
| Zwies | 9 |
| Zimri | 9 |
| Zibane | 9 |
| Zaman | 9 |
| Zinsli | 9 |
| Zuydam | 9 |
| Zono | 9 |