| 1975 | Cabato, Jaeden James | Bacchus Marsh Grammar | Bacchus Marsh | General Mathematics | 40 |
| 1976 | Cabral, Alyssa Marie A | Academy of Mary Immaculate | Fitzroy | Art Creative Practice | 47 |
| 1977 | Cabral, Alyssa Marie A | Academy of Mary Immaculate | Fitzroy | English | 40 |
| 1978 | Cabral, Alyssa Marie A | Academy of Mary Immaculate | Fitzroy | General Mathematics | 40 |
| 1979 | Cabral, Alyssa Marie A | Academy of Mary Immaculate | Fitzroy | Psychology | 40 |
| 1980 | Cabuyadao, Alessandrea Amin | Victoria University Secondary College Cairnlea Campus | St Albans | Biology | 41 |
| 1981 | Cachia, Jeremy Aidan | Emmanuel College Melbourne | Altona North | Applied Computing: Software Development | 42 |
| 1982 | Caciolo, Nicholas Harry | Mazenod College | Mulgrave | Literature | 43 |
| 1983 | Cadby, Caitlin Emily | Ballarat Clarendon College | Ballarat | Psychology | 45 |
| 1984 | Cadby, Caitlin Emily | Ballarat Clarendon College | Ballarat | Chemistry | 42 |
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| 1985 | Cadby, Caitlin Emily | Ballarat Clarendon College | Ballarat | English | 41 |
| 1986 | Cadusch, Thomas Neil | Eltham High School | Eltham | English | 41 |
| 1987 | Cadywould, William Nigel James | Trinity Grammar School | Kew | Business Management | 47 |
| 1988 | Cadywould, William Nigel James | Trinity Grammar School | Kew | Psychology | 45 |
| 1989 | Cadywould, William Nigel James | Trinity Grammar School | Kew | English | 44 |
| 1990 | Cafarella, Aidan Orlando | Mentone Grammar School | Mentone | Economics | 43 |
| 1991 | Cafarella, Aidan Orlando | Mentone Grammar School | Mentone | Business Management | 40 |
| 1992 | Caganoff, Lukas Andrew | John Monash Science School | Clayton | English | 40 |
| 1993 | Cahill, John Sawyer | Haileybury College | Keysborough | General Mathematics | 42 |
| 1994 | Cahill, Lucy Jagger | St Leonards College | Brighton East | English | 43 |
| 1995 | Cahill, Patrick John | Braemar College | Woodend | English | 42 |
| 1996 | Cahyono, Raphael | Xavier College | Kew | Business Management | 47 |
| 1997 | Cahyono, Raphael | Xavier College | Kew | English | 40 |
| 1998 | Cai, Alan Yueran | Haileybury College | Keysborough | General Mathematics | 50 |
| 1999 | Cai, Alan Yueran | Haileybury College | Keysborough | Systems Engineering | 50 |
| 2000 | Cai, Jessica | Macrobertson Girls High School | Melbourne | Chemistry | 41 |
| 2001 | Cai, Jessica | Macrobertson Girls High School | Melbourne | Specialist Mathematics | 40 |
| 2002 | Cai, Ruhan | Kardinia International College | Bell Post Hill | General Mathematics | 48 |
| 2003 | Cai, Ruhan | Kardinia International College | Bell Post Hill | Mathematical Methods | 46 |
| 2004 | Cai, Ruizhe | Trinity Grammar School | Kew | English | 43 |
| 2005 | Cai, Ruizhe | Trinity Grammar School | Kew | Specialist Mathematics | 42 |
| 2006 | Cai, Zekai | Camberwell Grammar School | Canterbury | Mathematical Methods | 41 |
| 2007 | Cai, Zekai | Camberwell Grammar School | Canterbury | English as an Additional Language | 40 |
| 2008 | Caillard, Pippa Catherine | Lauriston Girls School | Armadale | Psychology | 44 |
| 2009 | Cain, James Darren | Salesian College Sunbury | Sunbury | General Mathematics | 44 |
| 2010 | Caine, Zoe Elise | St Michaels Grammar School | St Kilda | Psychology | 41 |
| 2011 | Caine, Zoe Elise | St Michaels Grammar School | St Kilda | Physical Education | 40 |
| 2012 | Cairney, Ella Rose | McKinnon Secondary College | McKinnon | Geography | 47 |
| 2013 | Cairney, Ella Rose | McKinnon Secondary College | McKinnon | English | 43 |
| 2014 | Cairney, Ella Rose | McKinnon Secondary College | McKinnon | Legal Studies | 40 |
| 2015 | Caithness, Chloe | Mary MacKillop Catholic College | Leongatha | Physical Education | 40 |
| 2016 | Calabrese, Claudia | Santa Maria College | Northcote | English Language | 40 |
| 2017 | Calcagno, Dante Joaquim | Trinity Grammar School | Kew | Business Management | 44 |
| 2018 | Calder, Angus | Brighton Grammar School | Brighton | Biology | 42 |
| 2019 | Calder, Delaney Elizabeth | Mount St Joseph Girls College | Altona | Outdoor and Environmental Studies | 41 |
| 2020 | Calder, Hugh John | Melbourne Grammar School | Melbourne | Philosophy | 44 |
| 2021 | Calder, Hugh John | Melbourne Grammar School | Melbourne | English | 41 |
| 2022 | Calder, Hugh John | Melbourne Grammar School | Melbourne | Media | 41 |
| 2023 | Calder, Hugh John | Melbourne Grammar School | Melbourne | Psychology | 41 |
| 2024 | Caldow, Hailee Olivia | Sacred Heart College Geelong | Newtown | English | 40 |
Last Updated: 16 Jan 2024