| 13086 | Ong, Aaron Zhen-Jin | Waverley Christian College Wantirna South | Wantirna South | General Mathematics | 42 |
| 13087 | Ong, Alecia | Balwyn High School | Balwyn North | General Mathematics | 42 |
| 13088 | Ong, Andrea Emily | Emmanuel College Melbourne | Altona North | Visual Communication Design | 44 |
| 13089 | Ong, Gabrielle | Victorian School of Languages | Thornbury | Languages: Indonesian Second Language | 46 |
| 13090 | Ong, Joshua Hongqi | Haileybury College | Keysborough | Specialist Mathematics | 50 |
| 13091 | Ong, Joshua Hongqi | Haileybury College | Keysborough | Chemistry | 49 |
| 13092 | Ong, Joshua Hongqi | Haileybury College | Keysborough | Physics | 48 |
| 13093 | Ong, Joshua Hongqi | Haileybury College | Keysborough | English | 42 |
| 13094 | Ong, Megan Emiko | Presbyterian Ladies College | Burwood | Health and Human Development | 40 |
| 13095 | Ong, Mikhael Oliver | Balwyn High School | Balwyn North | Physics | 41 |
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| 13096 | Ong, Ruth Kai Sze | Werribee Secondary College | Werribee | Environmental Science | 50 |
| 13097 | Ong, Ruth Kai Sze | Werribee Secondary College | Werribee | Software Development | 47 |
| 13098 | Ong, Ruth Kai Sze | Werribee Secondary College | Werribee | Chemistry | 45 |
| 13099 | Ong, Ruth Kai Sze | Werribee Secondary College | Werribee | English | 43 |
| 13100 | Ong, Ruth Kai Sze | Werribee Secondary College | Werribee | Mathematical Methods | 40 |
| 13101 | Ong, Sebastian Wei Jet | Haileybury College | Keysborough | Biology | 46 |
| 13102 | Ong, Sebastian Wei Jet | Haileybury College | Keysborough | Economics | 45 |
| 13103 | Onggara, Witter | Scotch College | Hawthorn | Physics | 50 |
| 13104 | Onggara, Witter | Scotch College | Hawthorn | Mathematical Methods | 46 |
| 13105 | Onley, Charity | Donvale Christian College | Donvale | Visual Communication Design | 44 |
| 13106 | Ooi, Darren Jie | Brentwood Secondary College | Glen Waverley | English | 40 |
| 13107 | Ooi, Darren Jie | Brentwood Secondary College | Glen Waverley | General Mathematics | 40 |
| 13108 | Ooi, Isabella Celeste | Bayside College Paisley Campus | Newport | Psychology | 40 |
| 13109 | Ooi, Kieran Yong Keane | Melbourne High School | South Yarra | Mathematical Methods | 49 |
| 13110 | Ooi, Kieran Yong Keane | Melbourne High School | South Yarra | Chemistry | 43 |
| 13111 | Ooi, Kieran Yong Keane | Melbourne High School | South Yarra | Specialist Mathematics | 40 |
| 13112 | Ooi, Michael | Alphington Grammar School | Alphington | General Mathematics | 47 |
| 13113 | Oommen, Aaron | Balwyn High School | Balwyn North | Biology | 43 |
| 13114 | Oon, Jun Yang | Xin Jin Shan Chinese Language and Culture School | Mount Waverley | Languages: Chinese Culture and Society | 47 |
| 13115 | Oon, Jun Yang | Kilvington Grammar School | Ormond | Languages: Japanese Second Language | 40 |
| 13116 | Oon, Sean Jie | Waverley Christian College Wantirna South | Wantirna South | Health and Human Development | 48 |
| 13117 | Op De Coul, Demi Matisse | Ballarat Grammar School | Wendouree | General Mathematics | 42 |
| 13118 | Op De Coul, Demi Matisse | Ballarat Grammar School | Wendouree | English | 40 |
| 13119 | Opie, Charlie | Ivanhoe Grammar School Ridgeway | Ivanhoe | Health and Human Development | 46 |
| 13120 | Opie, Eve Marie | Mentone Grammar School | Mentone | Health and Human Development | 47 |
| 13121 | Or, Kwan Ho | Koonung Secondary College | Mont Albert North | General Mathematics | 43 |
| 13122 | Or, Kwan Ho | Koonung Secondary College | Mont Albert North | English as an Additional Language | 42 |
| 13123 | Ord, Alicia Irene | Presbyterian Ladies College | Burwood | Global Politics | 44 |
| 13124 | Ord, Anouk Jasmine | Kardinia International College | Bell Post Hill | Visual Communication Design | 45 |
| 13125 | Organ, Harrison Jethro | Kew High School | Kew East | Economics | 44 |
| 13126 | Organ, Harrison Jethro | Kew High School | Kew East | English | 40 |
| 13127 | Orgill, Sophie Edna | Berwick Secondary College | Berwick | Psychology | 42 |
| 13128 | Orlowski, Chelsea Georgia | Mentone Girls Grammar School | Mentone | English | 41 |
| 13129 | Orme, Ethan Ronald | Melbourne High School | South Yarra | Economics | 44 |
| 13130 | Ormes, Jac Lucas | Parkdale Secondary College | Mordialloc | Visual Communication Design | 42 |
| 13131 | Orr, Alyssa Jayde | Beaconhills College Berwick | Berwick | Physical Education | 42 |
| 13132 | Orsborn, Tallulah Luna | Beaumaris Secondary College | Beaumaris | Biology | 44 |
| 13133 | Orsborn, Tallulah Luna | Beaumaris Secondary College | Beaumaris | Health and Human Development | 42 |
| 13134 | Orsini, Leo Zander | Forest Hill College | Burwood East | Business Management | 40 |
| 13135 | Orsini, Luca | Whitefriars College | Donvale | Product Design and Technologies | 46 |