| 13980 | O'Malley, Michael | Sale College | Sale | Specialist Mathematics | 42 |
| 13981 | O'Malley, Xavier | St Kevins College | Toorak | English | 48 |
| 13982 | O'Malley, Xavier | St Kevins College | Toorak | Psychology | 40 |
| 13983 | O'Mallon, Finbar | Sandringham College | Sandringham | Studio Arts | 40 |
| 13984 | O'Meara, Caitlyn | Yea High School | Yea | Psychology | 42 |
| 13985 | O'Neill, Conor | Mornington Secondary College | Mornington | Food and Technology | 41 |
| 13986 | O'Neill, Jordan | Ivanhoe Grammar School Ridgeway | Ivanhoe | Physical Education | 41 |
| 13987 | O'Neill, Jordan | Ivanhoe Grammar School Ridgeway | Ivanhoe | Design and Technology | 40 |
| 13988 | O'Neill, Kate | Camberwell Girls Grammar School | Canterbury | English | 43 |
| 13989 | O'Neill, Kate | Camberwell Girls Grammar School | Canterbury | Theatre Studies | 43 |
| |
|||||
| 13990 | O'Neill, Megan | Caulfield Grammar School Caulfield | St Kilda East | Psychology | 47 |
| 13991 | O'Neill, Michael | St Kevins College | Toorak | English | 46 |
| 13992 | O'Neill, Molly | Trinity Grammar School | Kew | Business Management | 41 |
| 13993 | O'Neill, Ruby | Elwood College | Elwood | English | 43 |
| 13994 | O'Neill, Timothy | Cheltenham Secondary College | Cheltenham | Physical Education | 41 |
| 13995 | O'Regan, Alison | Santa Maria College | Northcote | English | 43 |
| 13996 | O'Regan, Alison | Santa Maria College | Northcote | Psychology | 40 |
| 13997 | O'Reilly, Mark | St Josephs College Geelong | Newtown | English | 42 |
| 13998 | O'Reilly, Mark | St Josephs College Geelong | Newtown | Physics | 42 |
| 13999 | O'Reilly, Mark | St Josephs College Geelong | Newtown | Chemistry | 40 |
| 14000 | O'Reilly, Owen | Wesley College St Kilda Rd | Melbourne | Psychology | 43 |
| 14001 | O'Shanassy, Lori | Diamond Valley College | Diamond Creek | English | 40 |
| 14002 | O'Shannassy, Joshua | De La Salle College | Malvern | Physical Education | 45 |
| 14003 | O'Shannassy, Joshua | De La Salle College | Malvern | Further Mathematics | 42 |
| 14004 | O'Shannassy, Joshua | De La Salle College | Malvern | Business Management | 41 |
| 14005 | O'Shea, Corey | Lyndale Secondary College | Dandenong North | IT Applications | 41 |
| 14006 | O'Shea, Patrick | Timboon P-12 School | Timboon | Further Mathematics | 43 |
| 14007 | O'Shea, Patrick | Timboon P-12 School | Timboon | Australian History | 41 |
| 14008 | O'Sullivan, Amelia | Genazzano F.C.J. College | Kew | Visual Communication Design | 41 |
| 14009 | O'Sullivan, Amelia | Genazzano F.C.J. College | Kew | English | 40 |
| 14010 | O'Sullivan, Brendan | Parade College | Bundoora | Psychology | 42 |
| 14011 | O'Sullivan, Jack | Xavier College | Kew | Geography | 44 |
| 14012 | O'Sullivan, Max | Penleigh and Essendon Grammar School | Keilor East | Health and Human Development | 43 |
| 14013 | O'Sullivan, Max | Penleigh and Essendon Grammar School | Keilor East | Further Mathematics | 41 |
| 14014 | O'Sullivan, Max | Penleigh and Essendon Grammar School | Keilor East | Physical Education | 40 |
| 14015 | O'Sullivan, Phoebe | Ruyton Girls School | Kew | English | 44 |
| 14016 | O'Sullivan, Phoebe | Ruyton Girls School | Kew | Literature | 43 |
| 14017 | O'Toole, Leigh | Luther College | Croydon Hills | Further Mathematics | 40 |
| 14018 | O'Yang, Christopher | Scotch College | Hawthorn | Biology | 40 |
| 14019 | Oakes, Felicity | Wanganui Park Secondary College | Shepparton | Music Solo Performance | 45 |
| 14020 | Oakes, Felicity | Wanganui Park Secondary College | Shepparton | English | 43 |
| 14021 | Oakes, Felicity | Wanganui Park Secondary College | Shepparton | Psychology | 40 |
| 14022 | Oakes, Zachary | University High School | Parkville | Further Mathematics | 44 |
| 14023 | Oakley, Samantha | Mount Waverley Secondary College | Mount Waverley | Psychology | 42 |
| 14024 | Oataway, Kym | Lilydale High School | Lilydale | Health and Human Development | 41 |
| 14025 | Oaten, Andrew | Melbourne Grammar School | Melbourne | English | 50 |
| 14026 | Oaten, Andrew | Melbourne Grammar School | Melbourne | Psychology | 44 |
| 14027 | Oaten, Cassandra | Loreto Mandeville Hall | Toorak | Health and Human Development | 42 |
| 14028 | Oatley, Caitlin | Braemar College | Woodend | English | 49 |
| 14029 | Oatley, Caitlin | Braemar College | Woodend | Literature | 43 |