| 13042 | Oberoi, Sanya | Huntingtower School | Mount Waverley | Geography | 40 |
| 13043 | Occhiuto, Anton Pierce | Salesian College Chadstone | Chadstone | General Mathematics | 48 |
| 13044 | Odgers, James Sirio | Billanook College | Mooroolbark | Music Performance (VCE VET) | 50 |
| 13045 | Ofoedu, Alexandra Chinwe | Suzanne Cory High School | Werribee | Psychology | 45 |
| 13046 | Ogawa Javes, Naoko | Melbourne Girls College | Richmond | English | 41 |
| 13047 | Ogawa Javes, Naoko | Melbourne Girls College | Richmond | Physics | 41 |
| 13048 | Ogden, Cooper Trent | Marcellin College | Bulleen | Biology | 43 |
| 13049 | Oghanna, Sara | St Monicas College | Epping | English | 44 |
| 13050 | Oghanna, Sara | St Monicas College | Epping | Psychology | 40 |
| 13051 | Oghanna, Yosip | Ivanhoe Grammar School Plenty | Doreen | Psychology | 46 |
| |
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| 13052 | Oghanna, Yosip | Ivanhoe Grammar School Plenty | Doreen | Chemistry | 40 |
| 13053 | Oguntade, Sharon Temiloluwa | Goulburn Valley Grammar School | Shepparton | Languages: Indonesian Second Language | 41 |
| 13054 | Oh, Abigail Shen-Ai | Ashwood High School | Ashwood | English | 42 |
| 13055 | Oh, Jayden Kay Hern | Balwyn High School | Balwyn North | Biology | 46 |
| 13056 | Oh, Jayden Kay Hern | Balwyn High School | Balwyn North | English Language | 43 |
| 13057 | Oh, Mia Caitlin | Waverley Christian College Wantirna South | Wantirna South | Visual Communication Design | 45 |
| 13058 | Oh, Seungmin | Melbourne High School | South Yarra | Accounting | 50 |
| 13059 | Ojaimi, Jack | Parkdale Secondary College | Mordialloc | English | 42 |
| 13060 | Ojaimi, Jack | Parkdale Secondary College | Mordialloc | Physics | 40 |
| 13061 | Okabe, Mio | South Oakleigh College | Oakleigh South | Business Management | 42 |
| 13062 | Okabe, Mio | South Oakleigh College | Oakleigh South | Visual Communication Design | 41 |
| 13063 | Okoumousis, Alexandra | Our Lady of Sacred Heart College | Bentleigh | Food Studies | 40 |
| 13064 | Okumura, Yuta | Victorian School of Languages | Thornbury | Languages: Japanese First Language | 40 |
| 13065 | Oladiji, Oluwatunmise Debby | Lighthouse Christian College Cranbourne | Cranbourne | General Mathematics | 45 |
| 13066 | Olaniyi, Faith Ibukunoluwa | Toorak College | Mount Eliza | Media | 43 |
| 13067 | Olaniyi, Faith Ibukunoluwa | Toorak College | Mount Eliza | Sociology | 41 |
| 13068 | Oldfield, Lucy Scarlet | Firbank Grammar School | Brighton | English | 44 |
| 13069 | Oldfield, Lucy Scarlet | Firbank Grammar School | Brighton | Physical Education | 41 |
| 13070 | Oldfield, Lyell John | Trinity Grammar School | Kew | English | 41 |
| 13071 | Oldham, Evie | St Josephs College Mildura | Mildura | General Mathematics | 46 |
| 13072 | Oldham, Georgina Lily | Melbourne Girls Grammar | South Yarra | Geography | 40 |
| 13073 | Oldham, Maya Melissa | Mildura Senior College | Mildura | Food Studies | 44 |
| 13074 | Oleksy, Veronica | Huntingtower School | Mount Waverley | Geography | 41 |
| 13075 | Oliver, Adele Jennifer | Canterbury Girls Secondary College | Canterbury | Psychology | 40 |
| 13076 | Oliver, David Timothy | University High School | Parkville | Music Inquiry | 40 |
| 13077 | Oliver, Katie Suzanne | Montmorency Secondary College | Montmorency | Physical Education | 40 |
| 13078 | Olorenshaw, Alexia Elaine | Ivanhoe Grammar School Ridgeway | Ivanhoe | Biology | 49 |
| 13079 | Olsson, Nathaniel Joseph | Kambrya College | Berwick | General Mathematics | 40 |
| 13080 | Olynyk, Matthew Robert | Caulfield Grammar School Caulfield | St Kilda East | Business Management | 44 |
| 13081 | Olynyk, Matthew Robert | Caulfield Grammar School Caulfield | St Kilda East | Legal Studies | 43 |
| 13082 | Olynyk, Matthew Robert | Caulfield Grammar School Caulfield | St Kilda East | English | 41 |
| 13083 | Om Prakash Sivavel, Hitanshi | John Monash Science School | Clayton | English | 43 |
| 13084 | Om Prakash Sivavel, Hitanshi | John Monash Science School | Clayton | Chemistry | 40 |
| 13085 | Omenoba, John | Thornbury High School | Thornbury | English | 40 |
| 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 |