| 20455 | Zomer, Willis Jack | Emmanuel College Melbourne | Altona North | Visual Communication Design | 44 |
| 20456 | Zomer, Willis Jack | Emmanuel College Melbourne | Altona North | Media | 41 |
| 20457 | Zong, Helen | Korowa Anglican Girls School | Glen Iris | Languages: Chinese Second Language | 40 |
| 20458 | Zorzut, Tilly | Our Lady of Mercy College | Heidelberg | General Mathematics | 42 |
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| 20459 | Zou, Harrison Yiming | Glen Waverley Secondary College | Glen Waverley | General Mathematics | 41 |
| 20460 | Zou, Jordan Chong-Jian | Albert Park College | Albert Park | General Mathematics | 41 |
| 20461 | Zou, Zichuan | Camberwell Grammar School | Canterbury | Specialist Mathematics | 41 |
| 20462 | Zou, Zichuan | Camberwell Grammar School | Canterbury | English Language | 40 |
| 20463 | Zu, Ryan | Melbourne Grammar School | Melbourne | English | 49 |
| 20464 | Zu, Ryan | Melbourne Grammar School | Melbourne | Literature | 45 |
| 20465 | Zubevich, Eva Grace | Brunswick Secondary College | Brunswick | Art Making and Exhibiting | 43 |
| 20466 | Zuchowski, Lily Grace | Avila College | Mount Waverley | Legal Studies | 41 |
| 20467 | Zukerman, Dion | Bialik College | Hawthorn | General Mathematics | 45 |
| 20468 | Zukerman, Dion | Bialik College | Hawthorn | Specialist Mathematics | 42 |
| 20469 | Zukerman, Dion | Bialik College | Hawthorn | English | 41 |
| 20470 | Zulkarnain, Zara Binti | John Monash Science School | Clayton | Physics | 41 |
| 20471 | Zuniga, Adriana Bele'N | John Paul College | Frankston | English | 43 |
| 20472 | Zuniga, Adriana Bele'N | John Paul College | Frankston | Psychology | 42 |
| 20473 | Zuydwyk, Amy Meletia Pearl | McClelland Secondary College | Frankston | Philosophy | 43 |
| 20474 | Zuydwyk, Amy Meletia Pearl | McClelland Secondary College | Frankston | English | 40 |
| 20475 | Zwag, Lydia Jireh | Waverley Christian College Wantirna South | Wantirna South | English | 43 |
| 20476 | Zygmunt, Michaela Eleni Sophia | Sacred Heart College Geelong | Newtown | Art Making and Exhibiting | 42 |
| 20477 | Zygmunt, Michaela Eleni Sophia | Sacred Heart College Geelong | Newtown | English | 41 |