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.
| 502 | Klingberg, Laura Lillian | SA | Merit | English Communications | |
| 503 | Klingberg, Laura Lillian | SA | Merit | Geography Studies | |
| 504 | Kloeden, Bethany | SA | Merit | Mathematical Studies | |
| 505 | Kloeden, Bethany | SA | Merit | Psychology | |
| 506 | Kneebone, Brooke | SA | Merit | Classical Studies | |
| 507 | Knobloch, Laura Kate | SA | Merit | Business Documents | |
| 508 | Kong, Kean Yang | SA | Merit | English as Second Language Studies | |
| 509 | Krishnan, Sabapathy Giridhar | SA | Merit | Chemistry | |
| 510 | Krishnan, Sabapathy Giridhar | SA | Merit | English Communications | |
| 511 | Kumar, Mekhla | SA | Merit | Solo Performance | |
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| 512 | Kurakata, Mitsuhiro (Michi) | SA | Merit | Japanese (Continuers) | |
| 513 | Kurebayashi, Yuki | SA | Merit | Communication and the Community II | |
| 514 | Kurylowicz, Lisa Danielle | SA | Merit | Physical Education | |
| 515 | Kwok, Nicholas Hahn | SA | Merit | Chemistry | |
| 516 | Kwok, Nicholas Hahn | SA | Merit | Mathematical Studies | |
| 517 | Kwok, Nicholas Hahn | SA | Merit | Physics | |
| 518 | Kwok, Nicholas Hahn | SA | Merit | Specialist Mathematics | |
| 519 | Kwok, Nicholas Hahn | St Peters College | St Peters | Australian Student Prize | |
| 520 | Lace, Claire Marie | SA | Merit | Women's Studies | |
| 521 | Ladd, Ruby Brooks | SA | Merit | Visual Arts Studies | |
| 522 | Lake, Chelsea | SA | Merit | Tourism | |
| 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 | |
| 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 | |