This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2019, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 307 | Giannopoulos, Alexander | SA | Merit | Physics | |
| 308 | Giannopoulos, Alexander | SA | Merit | Psychology | |
| 309 | Giannopoulos, Alexander | SA | Merit | Research Project B | |
| 310 | Giatrakos, Socrates | SA | Merit | Business and Enterprise | |
| 311 | Gibbs, Paris | SA | Merit | English | |
| 312 | Gill, Isabella Jane | SA | Merit | English | |
| 313 | Gilmore, Ben | SA | Merit | English | |
| 314 | Giri, Yash | SA | Merit | Biology | |
| 315 | Giri, Yash | SA | Merit | Chemistry | |
| 316 | Giri, Yash | SA | Merit | Economics | |
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| 317 | Giri, Yash | SA | Merit | Specialist Mathematics | |
| 318 | Glass, Noah James Macfarlane | SA | Merit | Japanese (Continuers) | |
| 319 | Glasson, Tayte | SA | Merit | Society and Culture | |
| 320 | Gluyas, Nikki Marie | SA | Merit | Outdoor Education | |
| 321 | Gocaj, Melinda | SA | Merit | English | |
| 322 | Goddard, Angus Owen | SA | Merit | Material Products I | |
| 323 | Goel, Ishita | SA | Merit | Chemistry | |
| 324 | Gogna, Silvy | SA | Merit | Psychology | |
| 325 | Golshani, Behtash | SA | Merit | Chemistry | |
| 326 | Golshani, Behtash | SA | Merit | Physics | |
| 327 | Golshani, Behtash | SA | Merit | Specialist Mathematics | |
| 328 | Gong, Qian | SA | Merit | English as an Additional Language | |
| 329 | Gong, Qian | SA | Merit | Essential Mathematics | |
| 330 | Gong, Qian | SA | Merit | Research Project A | |
| 331 | Goodwin, Stephanie | SA | Merit | Integrated Learning A | |
| 332 | Goold, Emily | SA | Merit | Research Project B | |
| 333 | Gordon, Abbie Claire | SA | Merit | Integrated Learning B | |
| 334 | Gordon, Nicola | SA | Merit | Economics | |
| 335 | Gordon, Nicola | SA | Merit | English | |
| 336 | Gough, Hannah | SA | Merit | Physical Education | |
| 337 | Gouskos, Dion Anesti | SA | Merit | Essential Mathematics | |
| 338 | Gouskos, Peta | SA | Merit | Physical Education | |
| 339 | Goyal, Kush Mehar | SA | Merit | Modern History | |
| 340 | Goyal, Kush Mehar | SA | Merit | Music Performance - Solo | |
| 341 | Graziano, Alannah | SA | Merit | Psychology | |
| 342 | Green, Jackson | SA | Merit | Research Project B | |
| 343 | Gregory, Mary | SA | Merit | Research Project B | |
| 344 | Gregory, Taylah Jacinta | SA | Merit | Health | |
| 345 | Greig, Maddison | SA | Merit | Business and Enterprise | |
| 346 | Griffin, Matthew John | SA | Merit | Research Project B | |
| 347 | Grill, Claudia | SA | Merit | Child Studies | |
| 348 | Grow, William Jack | SA | Merit | Mathematical Methods | |
| 349 | Grow, William Jack | SA | Merit | Specialist Mathematics | |
| 350 | Guidera, Mitchell Redman | SA | Merit | Mathematical Methods | |
| 351 | Guidera, Mitchell Redman | SA | Merit | Specialist Mathematics | |
| 352 | Guruge, Kulunu Sewmina | SA | Merit | Chemistry | |
| 353 | Guy, Alice Sylvia | SA | Merit | Research Project B | |
| 354 | Gwynne, Lachlan | St Michaels College | Henley Beach | Gov of SA SACE Award | |
| 355 | Gwynne, Lachlan James | SA | Merit | Mathematical Methods | |
| 356 | Gwynne, Lachlan James | SA | Merit | Physics | |