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.
| 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 | |
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| 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 | |
| 472 | Gunn, Kate McDonald | SA | Merit | English Communications | |
| 473 | Gunn, Kate McDonald | SA | Merit | Geography Studies | |
| 474 | Gunn, Kate McDonald | SA | Merit | Mathematical Applications | |
| 475 | Gunn, Kate McDonald | Seymour College | Glen Osmond | Australian Student Prize | |
| 476 | Gunner, Susan Mary | SA | Merit | French (Accelerated) | |
| 477 | Guymer, Victoria | SA | Merit | Historical Studies - Ancient | |
| 478 | Ha, Hanh | SA | Merit | Mathematical Studies | |
| 479 | Hackett, Marian | SA | Merit | English Communications | |
| 480 | Hackett, Marian | SA | Merit | Studies of Societies | |
| 481 | Haigh, Joseph | SA | Merit | Religions in Australia | |
| 482 | Haines, Jelina | SA | Merit | Business and the Community | |
| 483 | Haines, Jelina | SA | Merit | Craft Practical | |
| 484 | Haines, Jelina | SA | Merit | The Arts and the Community | |
| 485 | Hains, Simon Daniel | SA | Merit | Design Practical | |
| 486 | Hallett, Joshua David | SA | Merit | Physical Education | |
| 487 | Hallett, Zebedy | SA | Prize: Geological Society of Australia Prize | Geology | |
| 488 | Hallett, Zebedy Kate | SA | Merit | Geography Studies | |
| 489 | Hallett, Zebedy Kate | SA | Merit | Geology | |
| 490 | Halstead, Peter | SA | Merit | Agricultural and Horticultural Studies I | |
| 491 | Hamood, Toni Lee | SA | Merit | Child Studies | |
| 492 | Hamper, Thomas | SA | Merit | English Communications | |
| 493 | Hank, Amanda Jayne | SA | Merit | Physical Education | |