| 13083 | O'SHEA, Tyson Rory | Camberwell High School | Canterbury | Media | 42 |
| 13084 | O'SHEA, Tyson Rory | Camberwell High School | Canterbury | English | 40 |
| 13085 | O'SULLIVAN, Abby Mae | Melbourne Girls Grammar | South Yarra | Business Management | 42 |
| 13086 | O'SULLIVAN, Abby Mae | Melbourne Girls Grammar | South Yarra | English | 40 |
| 13087 | O'SULLIVAN, Aoife | Brauer College | Warrnambool | Health and Human Development | 41 |
| 13088 | O'SULLIVAN, Ciara | Korowa Anglican Girls School | Glen Iris | History: Revolutions | 42 |
| 13089 | O'SULLIVAN, Georgia Rose | Star of the Sea College | Brighton | Legal Studies | 41 |
| 13090 | O'SULLIVAN, Grace Barbara | Peninsula Grammar | Mount Eliza | Psychology | 43 |
| 13091 | O'SULLIVAN, Sarah Elizabeth | Lauriston Girls School | Armadale | English | 45 |
| 13092 | O'SULLIVAN, Sarah Elizabeth | Lauriston Girls School | Armadale | Further Mathematics | 41 |
| |
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| 13093 | O'SULLIVAN, Thomas John | Xavier College | Kew | Further Mathematics | 40 |
| 13094 | OAKES, Thea Elizabeth | Strathmore Secondary College | Strathmore | Media | 45 |
| 13095 | OAKES, Thea Elizabeth | Strathmore Secondary College | Strathmore | Art | 42 |
| 13096 | OAKLEY, Ashley Lauren | Santa Maria College | Northcote | Further Mathematics | 42 |
| 13097 | OAKLEY, Ashley Lauren | Santa Maria College | Northcote | English | 41 |
| 13098 | OAKLEY, Ashley Lauren | Santa Maria College | Northcote | History: Revolutions | 40 |
| 13099 | OAKLEY, Holly | Ave Maria College | Aberfeldie | Literature | 40 |
| 13100 | OBEROI, Lakshya | Balwyn High School | Balwyn North | Visual Communication Design | 41 |
| 13101 | OCALLAGHAN, Teagan | The Knox School | Wantirna South | Further Mathematics | 49 |
| 13102 | OCALLAGHAN, Teagan | The Knox School | Wantirna South | English | 43 |
| 13103 | OCTIGAN, Evangeline Lily | Rosebud Secondary College | Rosebud | Media | 44 |
| 13104 | ODELL, Kasia O'Loughlin | Kew High School | Kew East | Media | 43 |
| 13105 | ODGERS, Megan Lea | Kilvington Grammar School | Ormond | Business Management | 44 |
| 13106 | ODISHO, Marianne | Kolbe Catholic College | Greenvale Lakes | History: Revolutions | 44 |
| 13107 | OEN, Sarah Jia Wen | Donvale Christian College | Donvale | Psychology | 41 |
| 13108 | OERTEL, Timothy | Waverley Christian College Wantirna South | Wantirna South | Biology | 42 |
| 13109 | OERTEL, Timothy | Waverley Christian College Wantirna South | Wantirna South | Chemistry | 40 |
| 13110 | OGIER, Genevieve Marie | Yarra Valley Grammar School | Ringwood | Legal Studies | 40 |
| 13111 | OGIER, Samuel Anthony | Frankston High School | Frankston | Further Mathematics | 41 |
| 13112 | OGNENOVSKI, Filip | Copperfield College | Delahey | Further Mathematics | 43 |
| 13113 | OGNENOVSKI, Filip | Victorian School of Languages | Thornbury | Languages: Macedonian | 41 |
| 13114 | OHALLORAN, Phoebe Joy | Rainbow P-12 College | Rainbow | English | 41 |
| 13115 | OHIS, Stephanie Naomi | Genazzano F.C.J. College | Kew | Health and Human Development | 41 |
| 13116 | OHLSON, Chelsea Elisabeth | Emmaus College | Vermont South | Chemistry | 42 |
| 13117 | OHRI, Seerat | Genazzano F.C.J. College | Kew | Health and Human Development | 47 |
| 13118 | OHRI, Seerat | Genazzano F.C.J. College | Kew | English | 45 |
| 13119 | OHYAMA, Marisa | The Geelong College | Newtown | Further Mathematics | 43 |
| 13120 | OHYAMA, Marisa | Victorian School of Languages | Thornbury | Languages: Japanese Second Language | 43 |
| 13121 | OJA, Tahlia Mai | Academy of Mary Immaculate | Fitzroy | Health and Human Development | 44 |
| 13122 | OKHUIZEN, Youp Hinderik Petrus | Haileybury College | Keysborough | English | 45 |
| 13123 | OKHUIZEN, Youp Hinderik Petrus | Haileybury College | Keysborough | Global Politics | 42 |
| 13124 | OLADELE, Babatobi Eniola | Goulburn Valley Grammar School | Shepparton | Music Performance | 41 |
| 13125 | OLANDER, Kane | Marcellin College | Bulleen | Further Mathematics | 41 |
| 13126 | OLBINSKI, Erick | St Bedes College | Mentone | Physical Education | 46 |
| 13127 | OLBINSKI, Erick | St Bedes College | Mentone | Physics | 44 |
| 13128 | OLBINSKI, Erick | St Bedes College | Mentone | Biology | 42 |
| 13129 | OLDFIELD, Joel Pacchiana | Box Hill High School | Box Hill | Further Mathematics | 40 |
| 13130 | OLDFIELD, Kate Elizabeth | Methodist Ladies College | Kew | Accounting | 41 |
| 13131 | OLDFIELD, Kate Elizabeth | Methodist Ladies College | Kew | English | 40 |
| 13132 | OLDIS, Alec Thomas | St Kevins College | Toorak | English | 45 |