| 18783 | Yiannacou, Darius George | Penleigh and Essendon Grammar School | Keilor East | English | 40 |
| 18784 | Yiao, Sammi | Northcote High School | Northcote | English as an Additional Language | 40 |
| 18785 | Yildiz, Lara Aleyna | St Columbas College | Essendon | English | 40 |
| 18786 | Yilmaz, Jeyda | Roxburgh College | Roxburgh Park | English | 40 |
| 18787 | Yilmaz, Jeyda | Roxburgh College | Roxburgh Park | Legal Studies | 40 |
| 18788 | Yilmaz, Jeyda | Roxburgh College | Roxburgh Park | Psychology | 40 |
| 18789 | Yim, Lauren | Haileybury Girls College | Keysborough | Mathematical Methods | 50 |
| 18790 | Yim, Lauren | Haileybury Girls College | Keysborough | Biology | 45 |
| 18791 | Yin, Feiyan | Mater Christi College | Belgrave | Further Mathematics | 41 |
| 18792 | Yin, Luke Ming Xiang | Haileybury College | Keysborough | Biology | 41 |
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| 18793 | Yin, Luke Ming Xiang | Haileybury College | Keysborough | Psychology | 41 |
| 18794 | Yin, Qianli | Northcote High School | Northcote | Mathematical Methods | 41 |
| 18795 | Yin, Xinyu | Firbank Grammar School Suzhou International Foreign Language School | Suzhou, China | Further Mathematics | 44 |
| 18796 | Yin, Zhihan | Firbank Grammar School Shanghai Tianhua College High School | Shanghai, China | Mathematical Methods | 44 |
| 18797 | Yin, Zhihan | Firbank Grammar School Shanghai Tianhua College High School | Shanghai, China | Specialist Mathematics | 44 |
| 18798 | Yin, Zhihan | Firbank Grammar School Shanghai Tianhua College High School | Shanghai, China | Further Mathematics | 41 |
| 18799 | Yin, Zhihan | Firbank Grammar School Shanghai Tianhua College High School | Shanghai, China | Physics | 41 |
| 18800 | Yin, Zihui | Presbyterian Ladies College | Burwood | Languages: Chinese Second Language Advanced | 48 |
| 18801 | Ying, Teer | Thomas Carr College Wenzhou No 21 Middle School | Wenzhou, China | Mathematical Methods | 47 |
| 18802 | Ying, Teer | Thomas Carr College Wenzhou No 21 Middle School | Wenzhou, China | Chemistry | 44 |
| 18803 | Ying, Teer | Thomas Carr College Wenzhou No 21 Middle School | Wenzhou, China | Physics | 44 |
| 18804 | Ying, Teer | Thomas Carr College Wenzhou No 21 Middle School | Wenzhou, China | Specialist Mathematics | 42 |
| 18805 | Yiontis, Eve Christine | Lauriston Girls School | Armadale | Visual Communication Design | 41 |
| 18806 | Yiontis, Eve Christine | Lauriston Girls School | Armadale | Studio Arts | 40 |
| 18807 | Yoannidis, Mitchell Zane | Marcellin College | Bulleen | Further Mathematics | 43 |
| 18808 | Yogaraja, Narthana | MacRobertson Girls High School | Melbourne | English Language | 40 |
| 18809 | Yogaraja, Yathiksha | Nossal High School | Berwick | Accounting | 41 |
| 18810 | Yogaraja, Yathiksha | Nossal High School | Berwick | English | 41 |
| 18811 | Yohanan Glasman, Itay | Bialik College | Hawthorn | English as an Additional Language | 43 |
| 18812 | Yong Teck, Brendon Owen | Haileybury College | Keysborough | Mathematical Methods | 49 |
| 18813 | Yong Teck, Brendon Owen | Haileybury College | Keysborough | Biology | 46 |
| 18814 | Yong Teck, Laura Lyn | Haileybury Girls College | Keysborough | Languages: French | 44 |
| 18815 | Yong Teck, Laura Lyn | Haileybury Girls College | Keysborough | English | 40 |
| 18816 | Yong Teck, Laura Lyn | Haileybury Girls College | Keysborough | Mathematical Methods | 40 |
| 18817 | Yong, Anthony Ju Wei | Mazenod College | Mulgrave | Drama | 45 |
| 18818 | Yong, Anthony Ju Wei | Mazenod College | Mulgrave | English Language | 42 |
| 18819 | Yong, Ethan | East Doncaster Secondary College | Doncaster East | Further Mathematics | 46 |
| 18820 | Yong, Jin Liang | Vermont Secondary College | Vermont | Economics | 46 |
| 18821 | Yong, Jin Liang | Vermont Secondary College | Vermont | English | 41 |
| 18822 | Yonzon, Sangey | Melbourne High School | South Yarra | Psychology | 44 |
| 18823 | Yorke, James Bruce | Ballarat Clarendon College | Ballarat | Physics | 47 |
| 18824 | Yorke, James Bruce | Ballarat Clarendon College | Ballarat | Further Mathematics | 45 |
| 18825 | Yoshikawa, Reika | Korowa Anglican Girls School | Glen Iris | Psychology | 43 |
| 18826 | Yoshikawa, Reika | Korowa Anglican Girls School | Glen Iris | English | 41 |
| 18827 | Yoshikawa, Reika | Korowa Anglican Girls School | Glen Iris | History: Revolutions | 40 |
| 18828 | Yost, Hannah Victoria | Mount St Joseph Girls College | Altona | Psychology | 40 |
| 18829 | You, Liuyang | Vermont Secondary College | Vermont | Mathematical Methods | 46 |
| 18830 | You, Liuyang | Vermont Secondary College | Vermont | Chemistry | 43 |
| 18831 | You, Liuyang | Vermont Secondary College | Vermont | Specialist Mathematics | 41 |
| 18832 | You, Reagan | Haileybury College | Keysborough | Data Analytics | 44 |