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.
| 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 | |
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| 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 | |
| 233 | Cuffe, Jenna Kate | SA | Merit | Child Studies | |
| 234 | Cvetanovic, Aleksandra | SA | Merit | Research Project B | |
| 235 | Daish, Taleah Grace | SA | Merit | General Mathematics | |
| 236 | Dal Bello, Joseph | SA | Merit | English | |
| 237 | Dally, Sarah Maddison | SA | Merit | General Mathematics | |
| 238 | Dang, Catherine Nguyen | SA | Merit | Chemistry | |
| 239 | Dang, Tam Minh | SA | Merit | Digital Technologies | |
| 240 | Danish, Ammar | SA | Merit | Research Project B | |
| 241 | Datta Gupta, Koninika | SA | Merit | Essential Mathematics | |
| 242 | Datta Gupta, Koninika | SA | Merit | Psychology | |
| 243 | Davey, Grace | SA | Merit | Legal Studies | |
| 244 | Davidson, Georgia Clare | SA | Merit | Drama | |
| 245 | Davies, Benjamin | SA | Merit | English | |
| 246 | Davies, Edward Anthony | SA | Merit | Accounting | |
| 247 | Davies, Edward Anthony | SA | Merit | Economics | |
| 248 | Davies, Edward Anthony | SA | Merit | Physics | |
| 249 | Davies, Edward Anthony | SA | Merit | Research Project B | |
| 250 | Davies, Emily Sian | SA | Merit | Research Project B | |
| 251 | Davies, Jonathan William Charles | SA | Merit | English | |
| 252 | Davies, Rhys Jac | SA | Merit | Research Project B | |