| 13289 | O'Neill, Edward Patrick | St Kevins College | Toorak | General Mathematics | 44 |
| 13290 | O'Neill, Jesse Gordon | Xavier College | Kew | Business Management | 40 |
| 13291 | O'Neill, Massimo Kevin | Kew High School | Kew East | Economics | 42 |
| 13292 | O'Neill, Miller William | Williamstown High School | Williamstown | Legal Studies | 44 |
| 13293 | O'Neill, Miller William | Williamstown High School | Williamstown | General Mathematics | 43 |
| 13294 | O'Neill, Miller William | Williamstown High School | Williamstown | History: Revolutions | 40 |
| 13295 | O'Neill, Samuel Anthony | Caulfield Grammar School Caulfield | St Kilda East | Physical Education | 42 |
| 13296 | O'Shannessy, Kai Arentz | Sandringham College | Sandringham | Art Making and Exhibiting | 40 |
| 13297 | O'Shannessy, Kai Arentz | Sandringham College | Sandringham | English Language | 40 |
| 13298 | O'Shaughnessy, Gilbert John | Balwyn High School | Balwyn North | Mathematical Methods | 43 |
| |
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| 13299 | O'Shaughnessy, Gilbert John | Balwyn High School | Balwyn North | Chemistry | 42 |
| 13300 | O'Shaughnessy, Gilbert John | Balwyn High School | Balwyn North | Specialist Mathematics | 41 |
| 13301 | O'Shaughnessy, Gilbert John | Balwyn High School | Balwyn North | English Language | 40 |
| 13302 | O'Shaughnessy, Liam David | Beaconhills College Pakenham | Pakenham | Foundation Mathematics | 41 |
| 13303 | O'Shea, Lucy Sylvia Joan | Girton Grammar School | Bendigo | Sociology | 43 |
| 13304 | O'Sullivan, Amelia | Brauer College | Warrnambool | Health and Human Development | 43 |
| 13305 | O'Sullivan, Amelia | Brauer College | Warrnambool | English | 41 |
| 13306 | O'Sullivan, Chloe Ava | Methodist Ladies College | Kew | Product Design and Technologies | 45 |
| 13307 | O'Sullivan, Declan Jack | Galen College | Wangaratta | Physical Education | 42 |
| 13308 | O'Sullivan, Sean Christopher | Trinity Grammar School | Kew | General Mathematics | 44 |
| 13309 | O'Sullivan, Sean Christopher | Trinity Grammar School | Kew | English | 43 |
| 13310 | O'Toole, Phoebe Anna Louise | Kilbreda College | Mentone | Sport and Recreation (VCE VET) | 43 |
| 13311 | O'Toole, Phoebe Anna Louise | Kilbreda College | Mentone | Foundation Mathematics | 42 |
| 13312 | Oakley, Keira Shaelyn | Methodist Ladies College | Kew | Health and Human Development | 43 |
| 13313 | Oakley, Keira Shaelyn | Methodist Ladies College | Kew | Business Management | 40 |
| 13314 | Oates, Amy Rebecca | Bacchus Marsh Grammar | Bacchus Marsh | Systems Engineering | 50 |
| 13315 | Oates, Pablo Villasanta | Gippsland Grammar | Sale | Media | 44 |
| 13316 | Oates, Pablo Villasanta | Gippsland Grammar | Sale | Languages: French | 40 |
| 13317 | Obaida, Yaseen | Yarra Valley Grammar School | Ringwood | English | 43 |
| 13318 | Obedoza, Aile Joy Aquiatan | Lara Secondary College | Lara | Health and Human Development | 40 |
| 13319 | Oberoi, Yajat | Caroline Chisholm Catholic College | Braybrook | English | 41 |
| 13320 | Oborne, Milly Rose | Strathmore Secondary College | Strathmore | Product Design and Technologies | 47 |
| 13321 | Occhiuto, Anton Pierce | Salesian College Chadstone | Chadstone | Psychology | 49 |
| 13322 | Occhiuto, Anton Pierce | Salesian College Chadstone | Chadstone | Environmental Science | 48 |
| 13323 | Occhiuto, Anton Pierce | Salesian College Chadstone | Chadstone | Literature | 44 |
| 13324 | Occhiuto, Anton Pierce | Avila College | Mount Waverley | Food Studies | 43 |
| 13325 | Occhiuto, Anton Pierce | Salesian College Chadstone | Chadstone | Visual Communication Design | 43 |
| 13326 | Oddie, Lucia | Carey Baptist Grammar School | Kew | Geography | 42 |
| 13327 | Oddy, Madeline Jane | Avila College | Mount Waverley | Agricultural and Horticultural Studies | 47 |
| 13328 | Oddy, Madeline Jane | Avila College | Mount Waverley | Psychology | 45 |
| 13329 | Oddy, Madeline Jane | Avila College | Mount Waverley | English | 42 |
| 13330 | Oehlers, Mishka Bernadette | Victorian College of the Arts Secondary School | Southbank | Dance (VCE VET) | 40 |
| 13331 | Oeng, Siev Khim | MacRobertson Girls High School | Melbourne | Physics | 46 |
| 13332 | Oeng, Siev Khim | MacRobertson Girls High School | Melbourne | Specialist Mathematics | 41 |
| 13333 | Officer, Martha Amelie Belinda | St Catherines School | Toorak | General Mathematics | 42 |
| 13334 | Officer, Martha Amelie Belinda | St Catherines School | Toorak | Business Management | 41 |
| 13335 | Ofoedu, Alexandra Chinwe | Suzanne Cory High School | Werribee | Health and Human Development | 44 |
| 13336 | Ofoedu, Alexandra Chinwe | Suzanne Cory High School | Werribee | Legal Studies | 43 |
| 13337 | Ofoedu, Alexandra Chinwe | Suzanne Cory High School | Werribee | English Language | 40 |
| 13338 | Ogden, Cooper Trent | Marcellin College | Bulleen | Geography | 45 |