| 20005 | Yu, Xiaolan | Korowa Anglican Girls School | Glen Iris | Mathematical Methods | 42 |
| 20006 | Yu, Yihang | Kilvington Grammar School | Ormond | Psychology | 50 |
| 20007 | Yu, Yihang | Kilvington Grammar School | Ormond | Legal Studies | 45 |
| 20008 | Yu, Yihang | Kilvington Grammar School | Ormond | General Mathematics | 44 |
| 20009 | Yu, Yihang | Kilvington Grammar School | Ormond | Literature | 40 |
| 20010 | Yu, Yingxuan | Haileybury Wuhan Foreign Language School | Wuhan, China | English as an Additional Language | 44 |
| 20011 | Yu, Yoong Keith | Ringwood Secondary College | Ringwood | Biology | 40 |
| 20012 | Yu, Yue Jacqueline | Balwyn High School | Balwyn North | Visual Communication Design | 41 |
| 20013 | Yu, Yuet Ching | East Doncaster Secondary College | Doncaster East | English as an Additional Language | 41 |
| 20014 | Yu, Zhihe | Ballarat Clarendon College | Ballarat | Mathematical Methods | 40 |
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| 20015 | Yu, Zichong | St Leonards College | Brighton East | English as an Additional Language | 43 |
| 20016 | Yuan, Charlize | MacRobertson Girls High School | Melbourne | English Language | 43 |
| 20017 | Yuan, Charlize | MacRobertson Girls High School | Melbourne | Accounting | 40 |
| 20018 | Yuan, Minhao | Overnewton Anglican College | Keilor | Chemistry | 50 |
| 20019 | Yuan, Minhao | Overnewton Anglican College | Keilor | English | 47 |
| 20020 | Yuan, Minhao | Overnewton Anglican College | Keilor | Music Inquiry | 47 |
| 20021 | Yuan, Minhao | Overnewton Anglican College | Keilor | Specialist Mathematics | 47 |
| 20022 | Yuan, Minhao | Overnewton Anglican College | Keilor | Physics | 44 |
| 20023 | Yuan, Owen Yizhe | Camberwell Grammar School | Canterbury | Mathematical Methods | 42 |
| 20024 | Yuan, Ruoyu | Mount Waverley Secondary College | Mount Waverley | Systems Engineering | 41 |
| 20025 | Yuan, Ruoyu | Mount Waverley Secondary College | Mount Waverley | Biology | 40 |
| 20026 | Yuen, Hing Wai | Balwyn High School | Balwyn North | Art Creative Practice | 46 |
| 20027 | Yuen, Hing Wai | Balwyn High School | Balwyn North | Biology | 43 |
| 20028 | Yuen, Hing Wai | Balwyn High School | Balwyn North | English | 41 |
| 20029 | Yuen, Hing Wai | Balwyn High School | Balwyn North | Mathematical Methods | 40 |
| 20030 | Yuen, Isabelle Rachel Wai-Guan | Haileybury Girls College | Keysborough | English | 45 |
| 20031 | Yuen, Lydia Shun-Ka | Waverley Christian College Wantirna South | Wantirna South | General Mathematics | 41 |
| 20032 | Yuen, Lydia Shun-Ka | Waverley Christian College Wantirna South | Wantirna South | Health and Human Development | 40 |
| 20033 | Yuen, Sunny Chisun | Haileybury College | Keysborough | English | 50 |
| 20034 | Yuen, Sunny Chisun | Haileybury College | Keysborough | General Mathematics | 43 |
| 20035 | Yuen-Williamson, Henry Louis | Melbourne Grammar School | Melbourne | Legal Studies | 40 |
| 20036 | Yuille, Billie Nattaya Leong | Presbyterian Ladies College | Burwood | Legal Studies | 43 |
| 20037 | Yushau Ali, Yusuf Yushau | Minaret College Officer | Officer | General Mathematics | 46 |
| 20038 | Yusuf, Ali Asadh | Caulfield Grammar School Wheelers Hill | Wheelers Hill | General Mathematics | 43 |
| 20039 | Yuwono, Charissa Magnolia | Glen Waverley Secondary College | Glen Waverley | Health and Human Development | 43 |
| 20040 | Zacharopoulos, Sara | Haileybury Girls College | Keysborough | English | 42 |
| 20041 | Zafina, Seona | John Monash Science School | Clayton | English | 40 |
| 20042 | Zahedi, Soheila | Nossal High School | Berwick | Health and Human Development | 50 |
| 20043 | Zahid, Fatima | Darul Ulum College of Victoria | Fawkner | General Mathematics | 40 |
| 20044 | Zahra, Ummatura | Nossal High School | Berwick | English | 41 |
| 20045 | Zaldivia, Lachlan Jude | Thomas Carr College | Tarneit | Business Management | 41 |
| 20046 | Zalevski, Alex Hamish | St Josephs College Geelong | Newtown | Systems Engineering | 41 |
| 20047 | Zalunardo, Miranda Burgundy | Newhaven College | Rhyll | English | 40 |
| 20048 | Zaman, Arsham | Haileybury College | Keysborough | Mathematical Methods | 40 |
| 20049 | Zaman, Yusra Armin | John Monash Science School | Clayton | English | 40 |
| 20050 | Zaman, Yusra Armin | John Monash Science School | Clayton | Psychology | 40 |
| 20051 | Zamani, Archia | Scotch College | Hawthorn | Mathematical Methods | 43 |
| 20052 | Zamani, Leila | Our Lady of Sacred Heart College | Bentleigh | Biology | 46 |
| 20053 | Zambelli, Ryan William | Glen Waverley Secondary College | Glen Waverley | General Mathematics | 43 |
| 20054 | Zammit, Annabel Helena | Emmaus College | Vermont South | Physical Education | 49 |