This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2020, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 141 | Cahill, Mason | SA | Merit | Research Project B | |
| 142 | Callado, Lesley Mary Joyce | SA | Merit | Visual Arts - Design | |
| 143 | Callcott, Polly Clementine Porter | SA | Merit | English | |
| 144 | Calleja, Nadine Paige | SA | Merit | Society and Culture | |
| 145 | Calleja, Nadine Paige | SA | Merit | Visual Arts - Art | |
| 146 | Campanale, Angelina | SA | Merit | Research Project B | |
| 147 | Cao, Laura Hoang Phuong Thao | SA | Merit | Research Project B | |
| 148 | Cao, Leyan | SA | Merit | Research Project B | |
| 149 | Caporaso, Emma Paige | SA | Merit | English | |
| 150 | Caporaso, Emma Paige | SA | Merit | Music Performance - Solo | |
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| 151 | Caporaso, Emma Paige | SA | Merit | Society and Culture | |
| 152 | Carapetis, Georgia | SA | Merit | Digital Technologies | |
| 153 | Carletti, Liliana Rose | SA | Merit | English | |
| 154 | Carlin, Eve | SA | Merit | English Literary Studies | |
| 155 | Carlin, Jett Russell | SA | Merit | Research Project B | |
| 156 | Carlin, Megan Rose | SA | Merit | General Mathematics | |
| 157 | Carlton, Hollie | SA | Merit | Research Project B | |
| 158 | Carpinelli, Mia | SA | Merit | Child Studies | |
| 159 | Carpinelli, Mia | SA | Merit | Religion Studies | |
| 160 | Carr, Jock | SA | Merit | Visual Arts - Design | |
| 161 | Carrodus, Emma | SA | Merit | Physical Education | |
| 162 | Carruthers, Malachy Christopher Ben | SA | Merit | Modern History | |
| 163 | Carter, Chelsea Rose | SA | Merit | Tourism | |
| 164 | Cassar, Prudence | SA | Merit | English | |
| 165 | Casson, Penelope | SA | Merit | English | |
| 166 | Casson, Penelope | SA | Merit | Research Project B | |
| 167 | Castaneda Habel, Isabel Leticia | SA | Merit | Psychology | |
| 168 | Castle, Bethany | SA | Merit | Research Project B | |
| 169 | Chadwick, Georgia Fay | SA | Merit | Biology | |
| 170 | Chaggar, Viraj Singh | SA | Merit | Chemistry | |
| 171 | Chaggar, Viraj Singh | SA | Merit | General Mathematics | |
| 172 | Chalmers, Bethany Ann | SA | Merit | Psychology | |
| 173 | Chalmers, Lachlan Peter | SA | Merit | Research Project B | |
| 174 | Chalmers, Lachlan Peter | SA | Merit | Specialist Mathematics | |
| 175 | Chan, Jyun Jing | SA | Merit | English as an Additional Language | |
| 176 | Chan, Nicole Sheong Ling | SA | Merit | Biology | |
| 177 | Chand, Shriya Shikha | SA | Merit | Workplace Practices | |
| 178 | Chang, Sunwoo | SA | Merit | Chemistry | |
| 179 | Chang, Sunwoo | SA | Merit | Mathematical Methods | |
| 180 | Chang, Victoria Hannah | SA | Merit | Research Project B | |
| 181 | Chang, Wen Yue | SA | Merit | Chinese (Continuers) | |
| 182 | Chang, Wen Yue | SA | Merit | Mathematical Methods | |
| 183 | Chapman, Riley Thomas | SA | Merit | Business and Enterprise | |
| 184 | Chauhan, Shivanshiba | SA | Merit | Physical Education | |
| 185 | Cheesman, Cassandra | SA | Merit | Child Studies | |
| 186 | Cheesman, Cassandra | SA | Merit | Religion Studies | |
| 187 | Chen, Liwei | SA | Merit | Biology | |
| 188 | Chen, Ru Jin Yi | SA | Merit | Research Project B | |
| 189 | Cheng, Xin Yi | SA | Merit | Information Processing and Publishing | |
| 190 | Cheung, Ellie Yau | SA | Merit | Chemistry | |