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.
| 422 | Galatis, Patrice Paige | SA | Merit | Chemistry | |
| 423 | Galatis, Patrice Paige | SA | Merit | English Studies | |
| 424 | Galatis, Patrice Paige | SA | Merit | Mathematical Studies | |
| 425 | Galatis, Patrice Paige | SA | Merit | Physics | |
| 426 | Galatis, Patrice Paige | Annesley College | Wayville | Australian Student Prize | |
| 427 | Galdes, James Patrick | SA | Merit | Information Technology | |
| 428 | Galipo, Cassandra | SA | Merit | English Communications | |
| 429 | Gallagher, James Philip | SA | Merit | English Studies | |
| 430 | Gallagher, James Philip | SA | Merit | Legal Studies | |
| 431 | Gallasch, Simon Martin John | SA | Merit | Furniture Construction | |
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| 432 | Gallman, Rebecca Russell | SA | Merit | English Communications | |
| 433 | Ganser, Gabrielle Ann | SA | Merit | Food and Hospitality | |
| 434 | Garcia, Christopher James | SA | Merit | Specialist Mathematics | |
| 435 | Gardner, Trent Cameron | SA | Merit | Information Technology | |
| 436 | Gatis, Tina | SA | Merit | Studies of Societies | |
| 437 | Geiger, Karl Hermann | SA | Merit | Composing and Arranging | |
| 438 | Geiger, Karl Hermann | SA | Merit | Musicianship | |
| 439 | Gent, Kevin Gregory | SA | Merit | Mathematical Studies | |
| 440 | Georg, Andrew Noel | SA | Merit | Performance Special Study | |
| 441 | Gibbs, Melissa Kay | SA | Merit | Chemistry | |
| 442 | Gibbs, Morag | SA | Merit | Historical Studies - Contemporary World | |
| 443 | Gibney, Sara Jane | SA | Merit | Studies of Societies | |
| 444 | Gibson, Brad Alexander | SA | Merit | Physics | |
| 445 | Gilbert, Jasmine Sanne | SA | Merit | Modern History | |
| 446 | Giles, Sally Elizabeth | SA | Merit | Biology | |
| 447 | Giles, Sally Elizabeth | SA | Merit | Business Studies | |
| 448 | Giles, Sally Elizabeth | SA | Merit | Economics | |
| 449 | Gill, Madeleine Gregorson | SA | Merit | English Studies | |
| 450 | Gill, Madeleine Gregorson | SA | Merit | Mathematical Studies | |
| 451 | Gillies-Smith, Rachael | SA | Merit | Small Business Enterprise | |
| 452 | Gillies-Smith, Rachael | SA | Merit | Vocational Studies B | |
| 453 | Glasson, Tracey | SA | Merit | Desktop Publishing | |
| 454 | Glue, Jeffrey Noel | SA | Merit | Information Technology | |
| 455 | Goder, Jessica Lea | SA | Merit | Business and the Community | |
| 456 | Goder, Jessica Lea | SA | Merit | Foods and the Community | |
| 457 | Gomersall, Sjaan | SA | Merit | Physics | |
| 458 | Gondo, Mutya | SA | Merit | English as Second Language Studies | |
| 459 | Gondo, Mutya | SA | Merit | Information Technology Studies | |
| 460 | Gondo, Mutya | SA | Merit | Mathematical Studies | |
| 461 | Goossens, Adam | SA | Merit | English Communications | |
| 462 | Gordon, Paul | SA | Merit | Modern History | |
| 463 | Gransbury, Laura Jane | SA | Merit | English Studies | |
| 464 | Green, Douglas Jamieson | SA | Merit | Geography Studies | |
| 465 | Griffin, Heather Briony | SA | Merit | English Studies | |
| 466 | Griffin, Heather Briony | SA | Merit | German (Continuers) | |
| 467 | Griffin, Heather Briony | SA | Merit | Mathematical Studies | |
| 468 | Grocke, Nathan James | SA | Merit | Furniture Construction | |
| 469 | Grosvenor, Megan Peta | SA | Merit | Food and Hospitality | |
| 470 | Gumpl, Karl Albert | SA | Merit | Geography Studies | |
| 471 | Gunn, Kate McDonald | SA | Merit | Business Studies | |