This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2021, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 183 | Chang, Wen Yue | SA | Merit | Chemistry | |
| 184 | Chang, Wen Yue | SA | Merit | Research Project B | |
| 185 | Chapman, Mary Isobel | SA | Merit | General Mathematics | |
| 186 | Chen, Rujinyi | SA | Merit | Specialist Mathematics | |
| 187 | Chen, Wenxi | SA | Merit | Mathematical Methods | |
| 188 | Cheng, Esther | SA | Merit | Psychology | |
| 189 | Cheung, Lynelle Therese | SA | Merit | Research Project B | |
| 190 | Chirara, Tanatswa | SA | Merit | Health and Wellbeing | |
| 191 | Choi, Jung Eun | SA | Merit | Mathematical Methods | |
| 192 | Choi, Yedam | SA | Merit | Research Project B | |
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| 193 | Choure, Yastika | SA | Merit | Research Project B | |
| 194 | Christian, Caleb Zachary | SA | Merit | Music Performance - Ensemble | |
| 195 | Christian, Caleb Zachary | SA | Merit | Music Performance - Solo | |
| 196 | Chronowski-Wong, Jacinta Agnieszka | SA | Merit | Music Explorations | |
| 197 | Chronowski-Wong, Jacinta Agnieszka | SA | Merit | Music Performance - Solo | |
| 198 | Chu, Anna Minh-Thy | SA | Merit | Research Project B | |
| 199 | Ciccozzi, Luke Donato | SA | Merit | Integrated Learning A | |
| 200 | Cirocco, Gianni Ferdinando | SA | Merit | Essential Mathematics | |
| 201 | Clark, Henry Rhodes | SA | Merit | Legal Studies | |
| 202 | Clark, Henry Rhodes | SA | Merit | Psychology | |
| 203 | Clements, Erin | SA | Merit | Material Solutions | |
| 204 | Clifford, Ryan | SA | Merit | Workplace Practices | |
| 205 | Coates, Madeleine Jane | SA | Merit | English Literary Studies | |
| 206 | Coates, Madeleine Jane | SA | Merit | Mathematical Methods | |
| 207 | Cobb, Jemma Mary-Ann | SA | Merit | Research Project B | |
| 208 | Cochrane, Emily Alexandra | SA | Merit | Nutrition | |
| 209 | Coelho, Gabriela | SA | Merit | Society and Culture | |
| 210 | Coggins, Cameron Matthew | SA | Merit | General Mathematics | |
| 211 | Cole, Katherine Anne | SA | Merit | English | |
| 212 | Cole, Katherine Anne | SA | Merit | General Mathematics | |
| 213 | Cole, Lucy | SA | Merit | Business Innovation | |
| 214 | Cole, Lucy | SA | Merit | English | |
| 215 | Colgrave, Lulu | SA | Merit | Food and Hospitality | |
| 216 | Collins, Krystal Louise | SA | Merit | Research Project B | |
| 217 | Collis, Ellie | SA | Merit | Health and Wellbeing | |
| 218 | Collis, Ellie | SA | Merit | Integrated Learning B | |
| 219 | Colthorpe, Emma | SA | Merit | Psychology | |
| 220 | Condo, Cartia | SA | Merit | Research Project B | |
| 221 | Cook, Hollie-Lee | SA | Merit | Health and Wellbeing | |
| 222 | Cooke, Douglas Tasman | SA | Merit | Research Project B | |
| 223 | Cooper, Chloe | SA | Merit | Religion Studies | |
| 224 | Copping, Charlotte | SA | Merit | English | |
| 225 | Corbin, Eliza Mary | SA | Merit | Physical Education | |
| 226 | Cotton, Matilda Amalie | SA | Merit | Modern History | |
| 227 | Coventry, Bonita Rose Washington | SA | Merit | Visual Arts - Art | |
| 228 | Cowell, Lillian Paige | SA | Merit | Outdoor Education | |
| 229 | Cox, Scarlett | SA | Merit | Research Project B | |
| 230 | Craig, Harriet Alice | SA | Merit | Physical Education | |
| 231 | Craig, Harriet Alice | SA | Merit | Research Project B | |
| 232 | Cross, Jade Taylor | SA | Merit | Biology | |