This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2005, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 316 | Gagliardi, Kate Alicia | SA | Merit | Visual Arts Studies | |
| 317 | Gajic, Monika | SA | Merit | Biology | |
| 318 | Gajic, Monika | SA | Merit | English Studies | |
| 319 | Galpin, Jehnna Narelle | SA | Merit | Environment and the Community | |
| 320 | Gaonkar, Gauri | SA | Merit | Nutrition | |
| 321 | Gates, Katherine | SA | Merit | Business Studies | |
| 322 | Gates, Katherine | SA | Merit | English Communications | |
| 323 | Gates, Katherine | SA | Merit | Mathematical Methods | |
| 324 | Gates, Katherine | SA | Merit | Modern History | |
| 325 | Geary, Tristram | SA | Merit | Philosophy | |
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| 326 | Gehlig, Ashleigh | SA | Merit | Tourism | |
| 327 | Gehlig, Ashleigh | SA | Merit | Visual Arts Studies | |
| 328 | George, Lauren Elise | SA | Merit | Mathematical Methods | |
| 329 | George, Levi Truby | SA | Merit | Broadcasting and Multimedia B | |
| 330 | Gerlach, Jana | SA | Merit | Legal Studies | |
| 331 | Gerrard, Isabelle Mary | SA | Merit | Art Practical | |
| 332 | Gerrard, Isabelle Mary | SA | Merit | English Communications | |
| 333 | Ghanem, Carole Mary | SA | Merit | Work and the Community | |
| 334 | Giam, Thomas Cheng Teik | SA | Merit | Musicianship | |
| 335 | Gibbons, Kayla Dawn | SA | Merit | Ensemble Performance | |
| 336 | Gibson, Edward Lawrence | SA | Merit | Modern History | |
| 337 | Gilmour, Kristelle Jade | SA | Merit | Design, Construction and the Community | |
| 338 | Ginn, Natalie Sue-Anne | SA | Merit | Solo Performance | |
| 339 | Golat, Aleksandra | SA | Merit | Studies of Societies | |
| 340 | Golder, Helen Marie | SA | Merit | Agricultural and Horticultural Science | |
| 341 | Gordon, Alexander | SA | Merit | Chemistry | |
| 342 | Graney, Hannah Rose Cameron | SA | Merit | Visual Arts Studies | |
| 343 | Gransbury, Lucy Margaret | SA | Merit | English Communications | |
| 344 | Grant-Preece, Olivia Mary-Clare | SA | Merit | Economics | |
| 345 | Grant-Preece, Olivia Mary-Clare | SA | Merit | English Studies | |
| 346 | Grant-Preece, Olivia Mary-Clare | SA | Merit | Modern History | |
| 347 | Gray, Jordan Maxwell | SA | Merit | Business Studies | |
| 348 | Greaves, Cheryl | SA | Merit | Environment and the Community | |
| 349 | Green, Kimberley Lauren | SA | Merit | Vocational Studies B | |
| 350 | Green, Sarah | SA | Merit | Mathematical Applications | |
| 351 | Green, Simon Patrick | SA | Merit | Chemistry | |
| 352 | Gregory, Richard | SA | Merit | Geography Studies | |
| 353 | Griffiths, Bryan Wayne | SA | Merit | Analytical Studies | |
| 354 | Griffiths, Bryan Wayne | SA | Merit | Composing and Arranging | |
| 355 | Griffiths, Bryan Wayne | SA | Merit | Music in Society | |
| 356 | Griffiths, Bryan Wayne | SA | Merit | Musicianship | |
| 357 | Grocke, Christian Andrew | SA | Merit | Physical Education | |
| 358 | Groves, Angus Bruce | SA | Merit | Mathematical Methods | |
| 359 | Gunawardena, Shayan Nilupul | SA | Merit | Accounting Studies | |
| 360 | Gunawardena, Shayan Nilupul | SA | Merit | Economics | |
| 361 | Gunawardena, Shayan Nilupul | SA | Merit | English as Second Language Studies | |
| 362 | Gustainis, Daniel | SA | Merit | Information Technology Studies | |
| 363 | Haghighi, Leila Christine | SA | Merit | Physical Education | |
| 364 | Hallett, Adele Fay | SA | Merit | Physics | |
| 365 | Hallett, Adele Fay | SA | Merit | Women's Studies | |