| 2001 | Cabanit, Caitlin Princess B | Caroline Chisholm Catholic College | Braybrook | English Language | 42 |
| 2002 | Cabanit, Caitlin Princess B | Caroline Chisholm Catholic College | Braybrook | Literature | 41 |
| 2003 | Cabelli, Joel Samuel | The King David School | Armadale | Business Management | 46 |
| 2004 | Cabraal, Resen Sanudaya | Parade College | Bundoora | Accounting | 40 |
| 2005 | Cabrera, Gabrielle | Caroline Chisholm Catholic College | Braybrook | Legal Studies | 43 |
| 2006 | Cabrera, Gabrielle | Caroline Chisholm Catholic College | Braybrook | Health and Human Development | 42 |
| 2007 | Cabrera, Gabrielle | Caroline Chisholm Catholic College | Braybrook | Sociology | 42 |
| 2008 | Cabuyadao, Alessandrea Amin | Victoria University Secondary College Cairnlea Campus | St Albans | Philosophy | 42 |
| 2009 | Cabuyadao, Alessandrea Amin | Victoria University Secondary College Cairnlea Campus | St Albans | English | 41 |
| 2010 | Cachia, Alysa Kate | Aitken College | Greenvale | Sociology | 41 |
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| 2011 | Caddeo, Charlotte | Our Lady of Mercy College | Heidelberg | Health and Human Development | 43 |
| 2012 | Caddeo, Charlotte | Our Lady of Mercy College | Heidelberg | Health (VCE VET) | 40 |
| 2013 | Caddy, Harrison James | Ivanhoe Grammar School Ridgeway | Ivanhoe | Business Management | 41 |
| 2014 | Cadekiwala, Maahum Noor | Taylors Lakes Secondary College | Taylors Lakes | Business Management | 43 |
| 2015 | Cadusch, Amaya Caitlin | Viewbank College | Viewbank | Psychology | 43 |
| 2016 | Caetano, Austin Christopher | The Knox School | Wantirna South | English | 40 |
| 2017 | Cafra, Gianluca | Taylors Lakes Secondary College | Taylors Lakes | Sport and Recreation (VCE VET) | 40 |
| 2018 | Cahill, Mark Patrick | St Kevins College | Toorak | English | 46 |
| 2019 | Cahill, Mark Patrick | St Kevins College | Toorak | Legal Studies | 46 |
| 2020 | Cahill, Mark Patrick | St Kevins College | Toorak | Economics | 41 |
| 2021 | Cahill, Ryan David | Frankston High School | Frankston | General Mathematics | 40 |
| 2022 | Cahill, Xavier Saunders | Ballarat Grammar School | Wendouree | Business Management | 43 |
| 2023 | Cahill, Xavier Saunders | Ballarat Grammar School | Wendouree | English | 43 |
| 2024 | Cai, Alan Yueran | Haileybury College | Keysborough | Mathematical Methods | 50 |
| 2025 | Cai, Alan Yueran | Haileybury College | Keysborough | English | 45 |
| 2026 | Cai, Alan Yueran | Haileybury College | Keysborough | Physics | 44 |
| 2027 | Cai, Alan Yueran | Haileybury College | Keysborough | Specialist Mathematics | 43 |
| 2028 | Cai, Elthia Min Hui | Ivanhoe Girls Grammar School | Ivanhoe | English | 43 |
| 2029 | Cai, Emily | Kingswood College | Box Hill | Economics | 45 |
| 2030 | Cai, Enhui | Victorian College of the Arts Secondary School | Southbank | Theatre Studies | 43 |
| 2031 | Cai, Grace | MacRobertson Girls High School | Melbourne | Accounting | 49 |
| 2032 | Cai, Minxi | Oxley Christian College | Chirnside Park | Mathematical Methods | 44 |
| 2033 | Cai, Ruhan | Kardinia International College | Bell Post Hill | Languages: Japanese Second Language | 46 |
| 2034 | Cai, Ruhan | Kardinia International College | Bell Post Hill | English as an Additional Language | 45 |
| 2035 | Cai, Ruhan | Kardinia International College | Bell Post Hill | Specialist Mathematics | 43 |
| 2036 | Cai, Wilson Tian Rui | Melbourne High School | South Yarra | English | 47 |
| 2037 | Cai, Wilson Tian Rui | Melbourne High School | South Yarra | Mathematical Methods | 40 |
| 2038 | Cai, Yulun | Trinity Grammar School | Kew | Algorithmics (HESS) | 40 |
| 2039 | Cai, Zhihao | Waverley Christian College Wantirna South | Wantirna South | Psychology | 40 |
| 2040 | Caiafa, Xavier Ethan | Salesian College Chadstone | Chadstone | English | 45 |
| 2041 | Caiafa, Xavier Ethan | Salesian College Chadstone | Chadstone | Australian History | 44 |
| 2042 | Cail, Alysha Heather | Eltham High School | Eltham | Hospitality: Cookery (VCE VET) | 40 |
| 2043 | Caillard, Pippa Catherine | Lauriston Girls School | Armadale | Literature | 49 |
| 2044 | Caillard, Pippa Catherine | Lauriston Girls School | Armadale | Languages: French | 48 |
| 2045 | Caillard, Pippa Catherine | Lauriston Girls School | Armadale | Biology | 44 |
| 2046 | Cain, Amber Rose | Trinity College | Colac | Biology | 42 |
| 2047 | Cain, Robert John | St Josephs College Geelong | Newtown | History: Revolutions | 40 |
| 2048 | Cain, Robert John | St Josephs College Geelong | Newtown | Psychology | 40 |
| 2049 | Caina, Parnell M Fontanilla | Suzanne Cory High School | Werribee | Economics | 41 |
| 2050 | Cairo, Laura Alison | Strathcona Girls Grammar School | Canterbury | Legal Studies | 46 |