| 701 | Zheng, Jiabao | Balwyn High School | Balwyn North | Mathematical Methods | 41 |
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| 702 | Zheng, Yang | Eltham College of Education | Research | Mathematical Methods | 48 |
| 703 | Zhong, Wen | Doncaster Secondary College | Doncaster | Mathematical Methods | 40 |
| 704 | Zhou, Han | Balwyn High School | Balwyn North | Mathematical Methods | 40 |
| 705 | Zhou, Zun | Taylors College | Melbourne | Mathematical Methods | 43 |
| 706 | Zhu, Sai Yi | Hawthorn Secondary College | Hawthorn East | Mathematical Methods | 42 |
| 707 | Zhu, Xiao Lin | Eltham College of Education | Research | Mathematical Methods | 47 |
| 708 | Zou, Qian | Balwyn High School | Balwyn North | Mathematical Methods | 48 |
| 709 | Zukerman, Darin | Bialik College | Hawthorn | Mathematical Methods | 45 |