| 13455 | OSMOND, Maegan Molly Kate | Ballarat Grammar School | Wendouree | English Language | 40 |
| 13456 | OSRIN, Jessica Brittany | Mount Scopus Memorial College | Burwood | English | 47 |
| 13457 | OSRIN, Jessica Brittany | Mount Scopus Memorial College | Burwood | History: Revolutions | 43 |
| 13458 | OSRIN, Jessica Brittany | Mount Scopus Memorial College | Burwood | Religion and Society | 40 |
| 13459 | OSTROGNAY, Isabella Kathleen | Northcote High School | Northcote | Food and Technology | 40 |
| 13460 | OSWALD-JACOBS, Francesca Alexandra | Toorak College | Mount Eliza | Visual Communication Design | 47 |
| 13461 | OTENSTEIN, Alix Felix | Cheltenham Secondary College | Cheltenham | Media | 46 |
| 13462 | OTIS, Jack Peter | Brighton Grammar School | Brighton | Legal Studies | 41 |
| 13463 | OTIS, Jack Peter | Brighton Grammar School | Brighton | English | 40 |
| 13464 | OTTAVI, Zoe Maree | Loreto College | Ballarat | Physical Education | 42 |
| |
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| 13465 | OU, Daniel | Nossal High School | Berwick | Mathematical Methods (CAS) | 48 |
| 13466 | OU, May Yan | Xin Jin Shan Chinese Language and Culture School | Mount Waverley | Languages: Chinese Second Language | 41 |
| 13467 | OU, May Yan | Fairhills High School | Knoxfield | Outdoor and Environmental Studies | 40 |
| 13468 | OU, Melody | Our Lady of Sion College | Box Hill | Visual Communication Design | 45 |
| 13469 | OU, Melody | Our Lady of Sion College | Box Hill | Media | 43 |
| 13470 | OUTEN, Jesse Darrell | St Kevins College | Toorak | Accounting | 45 |
| 13471 | OUTEN, Jesse Darrell | St Kevins College | Toorak | Business Management | 43 |
| 13472 | OUTEN, Jesse Darrell | St Kevins College | Toorak | English | 43 |
| 13473 | OVCARIC, Marcus Frank | Catholic Regional College Sydenham | Sydenham | Visual Communication Design | 41 |
| 13474 | OVERMAN, Gemma | St Columbas College | Essendon | Health and Human Development | 45 |
| 13475 | OVERTON, Charles | Trinity Grammar School | Kew | Further Mathematics | 42 |
| 13476 | OVERTON, Charles | Trinity Grammar School | Kew | English | 41 |
| 13477 | OWA, Oluwadamilola Sophie | Birchip P-12 School | Birchip | Health and Human Development | 41 |
| 13478 | OWA, Sam | Birchip P-12 School | Birchip | Physical Education | 41 |
| 13479 | OWEN, Cooper Sebastian | Viewbank College | Viewbank | Further Mathematics | 40 |
| 13480 | OWEN, Jack Anthony | Xavier College | Kew | Business Management | 44 |
| 13481 | OWEN, Jack Anthony | Xavier College | Kew | English | 41 |
| 13482 | OWEN, Jack Anthony | Xavier College | Kew | Further Mathematics | 40 |
| 13483 | OWEN, Molly Rose | Warrnambool College | Warrnambool | Health and Human Development | 45 |
| 13484 | OWEN, Molly Rose | Warrnambool College | Warrnambool | Further Mathematics | 41 |
| 13485 | OWEN, Riley Francis | Warrnambool College | Warrnambool | Further Mathematics | 43 |
| 13486 | OWEN, Riley Francis | Warrnambool College | Warrnambool | Physical Education | 43 |
| 13487 | OWEN, Sally Louise | Luther College | Croydon Hills | Chemistry | 41 |
| 13488 | OWEN, Sally Louise | Luther College | Croydon Hills | History: Revolutions | 40 |
| 13489 | OWEN, Tegan Cher Janelle | Gisborne Secondary College | Gisborne | Business Management | 40 |
| 13490 | OWENS-REED, Genevieve Anne | Mentone Girls Grammar School | Mentone | Theatre Studies | 41 |
| 13491 | OWENS-REED, Meghan Elisabeth | Mentone Girls Grammar School | Mentone | Languages: Japanese Second Language | 41 |
| 13492 | OYANG, Matthew | St Josephs College Geelong | Newtown | Biology | 44 |
| 13493 | OZAWA, Sahara | Canterbury Girls Secondary College | Canterbury | Languages: Japanese Second Language | 45 |
| 13494 | OZAYDIN, Eray | Sirius College Dandenong Campus | Keysborough | Further Mathematics | 42 |
| 13495 | OZAYDIN, Oliver David | Melbourne High School | South Yarra | Biology | 43 |
| 13496 | OZENIR, Eren | McKinnon Secondary College | McKinnon | Biology | 42 |
| 13497 | OZENIR, Eren | McKinnon Secondary College | McKinnon | Mathematical Methods (CAS) | 41 |
| 13498 | OZER, Okan | Austurk Saturday Turkish School | Gladstone Park | Languages: Turkish | 44 |
| 13499 | OZER, Okan | Gladstone Park Secondary College | Gladstone Park | Biology | 43 |
| 13500 | OZGA, Marcus Eric | Huntingtower School | Mount Waverley | Languages: Indonesian Second Language | 40 |
| 13501 | OZGUN, Deniz Mert | Caulfield Grammar School Caulfield | St Kilda East | Business Management | 40 |
| 13502 | OZIMKOVSKY-KLEIN, Liudmila | The Pushkin Lyceum Russian Community School | Elwood | Languages: Russian | 42 |
| 13503 | OZKAN, Havvanur | Sirius College Broadmeadows Campus | Broadmeadows | Languages: Turkish | 41 |
| 13504 | OZSOY, Shenay | Melbourne Girls College | Richmond | English | 41 |