This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2003, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 241 | Colley, Skye Tegan | SA | Merit | Design, Construction and the Community | |
| 242 | Collins-McBride, Morgan Jay | SA | Merit | Music in Society | |
| 243 | Collins-McBride, Morgan Jay | SA | Merit | Solo Performance | |
| 244 | Collins-McBride, Morgan Jay | SA | Merit | Visual Arts Studies | |
| 245 | Colombo, Corrina | SA | Merit | Child Studies | |
| 246 | Colville, Jonathon | SA | Merit | Ensemble Performance | |
| 247 | Commane, Heath | SA | Merit | Physical Education | |
| 248 | Condous, Kosta Paul | SA | Merit | Accounting Studies | |
| 249 | Confalone, Bruno | SA | Merit | Information Technology Studies | |
| 250 | Congdon, Leora Gem | SA | Merit | Language and the Community | |
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| 251 | Congdon, Leora Gem | SA | Merit | The Arts and the Community | |
| 252 | Contibas, Noula | SA | Merit | Women's Studies | |
| 253 | Coombes, Aaron Michael | SA | Merit | Music Individual Study | |
| 254 | Cooper, Emily Victoria | SA | Merit | Mathematical Studies | |
| 255 | Cooper, Emily Victoria | SA | Merit | Specialist Mathematics | |
| 256 | Corbett, Hannah Jasmine | SA | Merit | Legal Studies | |
| 257 | Corbett, Thomas | SA | Merit | Design Practical | |
| 258 | Corbett, Thomas | SA | Merit | Mathematical Studies | |
| 259 | Correa, Daisy Clare | SA | Merit | Spanish (Continuers) | |
| 260 | Corrigan, Kate | SA | Merit | Chemistry | |
| 261 | Corrigan, Kate | SA | Merit | Mathematical Studies | |
| 262 | Coventry, Mary Belinda | SA | Merit | Design, Construction and the Community | |
| 263 | Cox, Karen | SA | Merit | Physics | |
| 264 | Coxon, Benedict Francis | SA | Merit | Analytical Studies | |
| 265 | Coxon, Benedict Francis | SA | Merit | Musicianship | |
| 266 | Cozens, Patrick Michael | SA | Merit | Geography | |
| 267 | Craig, Lucy-Anna | SA | Merit | The Arts and the Community | |
| 268 | Craig, Patrea Irene | SA | Merit | English Studies | |
| 269 | Craig, Patrea Irene | SA | Merit | Geography Studies | |
| 270 | Craig, Patrea Irene | SA | Merit | German (Continuers) | |
| 271 | Cramey, Mitchell Andrew | SA | Merit | Economics | |
| 272 | Cramey, Mitchell Andrew | SA | Merit | Mathematical Applications | |
| 273 | Cranwell, Andrew Scott | SA | Merit | Chemistry | |
| 274 | Cranwell, Andrew Scott | SA | Merit | Mathematical Studies | |
| 275 | Crawford, Lucy Claire | SA | Merit | Chemistry | |
| 276 | Crosby, Danielle Durieu | SA | Merit | Studies of Societies | |
| 277 | Cross, Tamra | SA | Merit | Physical Education | |
| 278 | Culshaw, Andrew James | SA | Merit | Specialist Mathematics | |
| 279 | Cundle, Natasha Emma | SA | Merit | Economics | |
| 280 | Cuthbertson, James | SA | Merit | Biology | |
| 281 | Czyz, Milena | SA | Merit | English as a Second Language | |
| 282 | Daehn, Helmut Christian | SA | Merit | Spanish (Continuers) | |
| 283 | Daehn, Wilhelm Richard | SA | Merit | Spanish (Continuers) | |
| 284 | Dansie, Benjamin Neil | SA | Merit | Physics | |
| 285 | Das, Atandrila Ankan | SA | Merit | Physics | |
| 286 | Daughtry, Justin Paul | SA | Merit | Solo Performance | |
| 287 | Davies, Christopher | SA | Merit | Mathematical Studies | |
| 288 | Davies, Lucy Alice | SA | Merit | Business Studies | |
| 289 | Davies, Lucy Alice | SA | Merit | Child Studies | |
| 290 | Davies, Lucy Alice | SA | Merit | Information Technology | |