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.
| 523 | Lane, Tammy Merinda | SA | Merit | Design, Construction and the Community | |
| 524 | Lane, Tammy Merinda | SA | Merit | Foods and the Community I | |
| 525 | Langley, Joel Daniel | SA | Merit | Physical Education | |
| 526 | Langley, Melissa Kate | SA | Merit | Biology | |
| 527 | Langley, Melissa Kate | SA | Merit | English Studies | |
| 528 | Langley, Melissa Kate | SA | Merit | Modern History | |
| 529 | Langley, Melissa Kate | SA | Prize: Tennyson Medal | English Studies | |
| 530 | Langley, Melissa Kate | Eynesbury Senior College | Adelaide | Australian Student Prize | |
| 531 | Langsford, Claire | SA | Merit | Psychology | |
| 532 | Lanzilli, Vittoria | SA | Merit | Retail B | |
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| 533 | Lapins, Monique | SA | Merit | Performance Special Study | |
| 534 | Laskowski, Mark | SA | Merit | Design, Construction and the Community II | |
| 535 | Lau, Lynn | SA | Merit | Ensemble Performance | |
| 536 | Laurinaitis, Andrius Tomas | SA | Merit | Ensemble Performance | |
| 537 | Laurinaitis, Andrius Tomas | SA | Merit | Music Individual Study | |
| 538 | Le Blanc, Shannon Kate | SA | Merit | Ensemble Performance | |
| 539 | Le, Celia Danielle | SA | Merit | Solo Performance | |
| 540 | Le, Kim Tran (Emily) | SA | Merit | Biology | |
| 541 | Le, Kim Tran (Emily) | SA | Merit | Physics | |
| 542 | Learey, Meagan Michelle | SA | Merit | Health Studies | |
| 543 | LeBrun, Isaac | SA | Merit | Design, Construction and the Community | |
| 544 | Lee-Gaston, Christopher Matthew | SA | Merit | Design Practical | |
| 545 | Lehmann, Madeline | SA | Merit | Business Studies | |
| 546 | Lemon, Jessica Rose | SA | Merit | English Studies | |
| 547 | Leow, Amy Wen-Li | SA | Merit | Legal Studies | |
| 548 | Leow, Amy Wen-Li | SA | Merit | Mathematical Studies | |
| 549 | Leung, Wing Sum | SA | Merit | Design Practical | |
| 550 | Lever, Evan James | SA | Merit | Classical Studies | |
| 551 | Lewis, Claire Naomi | SA | Merit | Nutrition | |
| 552 | Li, Si Ying (Joanna) | SA | Merit | Chinese (Background Speakers) | |
| 553 | Li, Yiru | SA | Merit | Chinese (Background Speakers) | |
| 554 | Liedig, Bridget | SA | Merit | Business Studies | |
| 555 | Liedig, Bridget | SA | Merit | English Studies | |
| 556 | Liedig, Bridget | SA | Merit | Modern History | |
| 557 | Liedig, Bridget Ann | Wilderness School | Medindie | Australian Student Prize | |
| 558 | Lienert, Gemma Nicole | SA | Merit | Mathematical Applications | |
| 559 | Lim, Lauren Hui-Lin | SA | Merit | Chemistry | |
| 560 | Lim, Lauren Hui-Lin | SA | Merit | English Studies | |
| 561 | Lim, Lauren Hui-Lin | SA | Merit | Mathematical Studies | |
| 562 | Lim, Lauren Hui-Lin | SA | Merit | Physics | |
| 563 | Lim, Lauren Hui-Lin | SA | Merit | Specialist Mathematics | |
| 564 | Lim, Lauren Hui-Lin | Wilderness School | Medindie | Australian Student Prize | |
| 565 | Linley Slattery, Simone | SA | Merit | Solo Performance | |
| 566 | Lippett, Brittany Rae | SA | Merit | English Communications | |
| 567 | Lippett, Brittany Rae | SA | Merit | Geography Studies | |
| 568 | Lippett, Brittany Rae | SA | Merit | Mathematical Applications | |
| 569 | Lippett, Brittany Rae | SA | Merit | Modern History | |
| 570 | Lippett, Brittany Rae | Walford Anglican School for Girls | Hyde Park | Australian Student Prize | |
| 571 | Liu, Xinao | SA | Merit | Chinese (Continuers) | |
| 572 | Lloyd, Randall | SA | Merit | Design Practical | |