This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2018, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 251 | DE BARRO, Courtney Annalise | SA | Merit | English | |
| 252 | DE PIZZOL, Zali | SA | Merit | Business and Enterprise | |
| 253 | DE PIZZOL, Zali | SA | Merit | English | |
| 254 | DE ZOYSA, Randula | SA | Merit | Physics | |
| 255 | DEAN, Griffin Angus | SA | Merit | Research Project B | |
| 256 | DEGREEF, Aaron | SA | Merit | Research Project B | |
| 257 | DELA CRUZ, Francis Arice | SA | Merit | Research Project B | |
| 258 | DELBRIDGE, Piper Emily | SA | Merit | Health | |
| 259 | DELIC, Amelia | SA | Merit | Religion Studies | |
| 260 | DELIC, Amelia | SA | Merit | Research Project B | |
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| 261 | DELIC, Annalise | SA | Merit | Modern History | |
| 262 | Delic, Annalise | Eynesbury Senior College | Adelaide | Gov of SA SACE Award | |
| 263 | DELO, Yasna | SA | Merit | Drama | |
| 264 | DELUCA, Pia Manuela | SA | Merit | Biology | |
| 265 | DELUCA, Pia Manuela | SA | Merit | English Literary Studies | |
| 266 | DELUCA, Pia Manuela | SA | Merit | Psychology | |
| 267 | DEMPSTER, Jessica Rose | SA | Merit | Essential Mathematics | |
| 268 | DENG, Jazmine Kaye | SA | Merit | Creative Arts | |
| 269 | DENNIS, Isabella | SA | Merit | Research Project B | |
| 270 | DENNIS, Mia | SA | Merit | Research Project B | |
| 271 | DERRINGTON, Jennifer Jean | SA | Merit | General Mathematics | |
| 272 | DESANTIS, Tia | SA | Merit | English | |
| 273 | DEVITO, Hannah | SA | Merit | Physical Education | |
| 274 | DEVITO, Liberty | SA | Merit | General Mathematics | |
| 275 | DEVITO, Xani Louise | SA | Merit | Information Processing and Publishing | |
| 276 | DI STASIO, Ella | SA | Merit | Mathematical Methods | |
| 277 | DI STASIO, Ella | SA | Merit | Visual Arts - Art | |
| 278 | DIAS, Svetlana | SA | Merit | Music Individual Study | |
| 279 | DIAS, Svetlana | SA | Merit | Solo Performance | |
| 280 | DIX, Teagan Kathleen | SA | Merit | Research Project B | |
| 281 | DNISTRJANSKI, Tahlia | SA | Merit | Information Processing and Publishing | |
| 282 | DO, My Linh | SA | Merit | Food and Hospitality | |
| 283 | DO, My Linh | SA | Merit | Religion Studies | |
| 284 | DOBROVOLSKI, Nikolai Oleg | SA | Merit | Cross-Disciplinary Studies | |
| 285 | DOBROVOLSKI, Nikolai Oleg | SA | Merit | Research Project B | |
| 286 | DOLLING, Emilia | SA | Merit | English | |
| 287 | DONALDSON, Sophie Jasmine | SA | Merit | Visual Arts - Art | |
| 288 | DORAN, Siobhan Renee | SA | Merit | Research Project B | |
| 289 | DORRINGTON, Alexander Peter Albert | SA | Merit | English | |
| 290 | DOSTAN, Rebecca Jade | SA | Merit | Society and Culture | |
| 291 | DOUGLAS, Oliver Albert | SA | Merit | Modern History | |
| 292 | DOUGLAS, Oliver Albert | SA | Merit | Psychology | |
| 293 | DOWLING, Charlie Edward Dutton | SA | Merit | Research Project B | |
| 294 | DOWNING, Edward Murray | SA | Merit | Material Products II | |
| 295 | DOYLE, Courtney Brice | SA | Merit | English | |
| 296 | DU, Xinyu | SA | Merit | Essential English | |
| 297 | DUCKER, Alexandra | SA | Merit | General Mathematics | |
| 298 | DUFFY, Courtney | SA | Merit | Biology | |
| 299 | DUKALSKIS, Olivia | SA | Merit | Physical Education | |
| 300 | DUNSTAN, Joshua Paul | SA | Merit | Ensemble Performance | |