| 1101 | Zhang, Xiaoyan | Scotch College | Hawthorn | Mathematical Methods | 45 |
| 1102 | Zhang, Yanru | Mentone Girls Grammar School | Mentone | Mathematical Methods | 48 |
| 1103 | Zhang, Yongjie | Haileybury College | Keysborough | Mathematical Methods | 45 |
| 1104 | Zhang, Yuansheng | Reservoir High School | Reservoir | Mathematical Methods | 42 |
| 1105 | Zhang, Zeyuan | Trinity Grammar School | Kew | Mathematical Methods | 45 |
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| 1106 | Zhao, Jianghao | Ivanhoe Grammar School Ridgeway | Ivanhoe | Mathematical Methods | 47 |
| 1107 | Zhao, Xinyi | Thomas Carr College Wenzhou No 21 Middle School | Wenzhou, China | Mathematical Methods | 41 |
| 1108 | Zhao, Yinuo | Presbyterian Ladies College | Burwood | Mathematical Methods | 44 |
| 1109 | Zhao, Yuyang | Caulfield Grammar School Caulfield | St Kilda East | Mathematical Methods | 45 |
| 1110 | Zheng, Guobin | Kew High School | Kew East | Mathematical Methods | 46 |
| 1111 | Zheng, Qiyuan | Melbourne High School | South Yarra | Mathematical Methods | 42 |
| 1112 | Zheng, Tiancheng | Viewbank College | Viewbank | Mathematical Methods | 40 |
| 1113 | Zheng, Vincent | Caulfield Grammar School Wheelers Hill | Wheelers Hill | Mathematical Methods | 40 |
| 1114 | Zhou, Jing Wen | East Doncaster Secondary College | Doncaster East | Mathematical Methods | 41 |
| 1115 | Zhou, Kevin | McKinnon Secondary College | McKinnon | Mathematical Methods | 44 |
| 1116 | Zhou, Shuotao | Haileybury Ningbo Li Hui Li High School | Ningbo, China | Mathematical Methods | 41 |
| 1117 | Zhou, Tim | John Monash Science School | Clayton | Mathematical Methods | 42 |
| 1118 | Zhou, Yiqian | Trinity Grammar School | Kew | Mathematical Methods | 41 |
| 1119 | Zhou, Yishen | Haileybury College | Keysborough | Mathematical Methods | 41 |
| 1120 | Zhu, Guangda | Peninsula Grammar | Mount Eliza | Mathematical Methods | 40 |
| 1121 | Zhu, Jiaxi | Yarra Valley Grammar School | Ringwood | Mathematical Methods | 47 |
| 1122 | Zhu, Qi Qing | Melbourne High School | South Yarra | Mathematical Methods | 48 |
| 1123 | Zhu, Shuyi Bella | Yarra Valley Grammar School | Ringwood | Mathematical Methods | 45 |
| 1124 | Zhu, Xuanyi | Thomas Carr College Wenzhou No 21 Middle School | Wenzhou, China | Mathematical Methods | 41 |
| 1125 | Zhuo, Ziyi | Mount Waverley Secondary College | Mount Waverley | Mathematical Methods | 47 |
| 1126 | Zou, Alice | Lowther Hall Anglican Grammar School | Essendon | Mathematical Methods | 41 |
| 1127 | Zou, Daniel | Scotch College | Hawthorn | Mathematical Methods | 46 |