This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2018, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 533 | KNOWLES, Emma Bethany | SA | Merit | Research Project B | |
| 534 | KOO, Youngmo | SA | Merit | Specialist Mathematics | |
| 535 | KORE, Asher | SA | Merit | Research Project B | |
| 536 | KOSOL, Rosa | SA | Merit | Business and Enterprise | |
| 537 | KOSZEWSKI, Isaac | SA | Merit | Business and Enterprise | |
| 538 | KRITIKOS, Irene Theoni | SA | Merit | Communication Products I | |
| 539 | KROON, Ryan Thomas | SA | Merit | Research Project B | |
| 540 | KRYWANIO, Matilda | SA | Merit | Korean (Beginners) | |
| 541 | KRZYSTOSZEK, Daniela | SA | Merit | Child Studies | |
| 542 | LAI, Jia Jieh Reuben | SA | Merit | English as an Additional Language | |
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| 543 | LAING, Callum | SA | Merit | Research Project B | |
| 544 | LAKE, Lucinda Rose | SA | Merit | Creative Arts | |
| 545 | LAM, Antoinette Yi Xian | SA | Merit | Physics | |
| 546 | LAM, Lilian | SA | Merit | English | |
| 547 | LAM, Lilian | SA | Merit | Research Project B | |
| 548 | LAM, Lydia Yi Xue | SA | Merit | Chemistry | |
| 549 | LAM, Lydia Yi Xue | SA | Merit | English | |
| 550 | LAM, Thi Ngoc Anh | SA | Merit | Essential Mathematics | |
| 551 | LANCASTER, Amy Charlotte | SA | Merit | English Literary Studies | |
| 552 | LANCASTER, Amy Charlotte | SA | Merit | Modern History | |
| 553 | LANCASTER, Amy Charlotte | SA | Merit | Research Project B | |
| 554 | LAPARIDIS, John Alexander | SA | Merit | Workplace Practices | |
| 555 | LARA, Reya | SA | Merit | Research Project B | |
| 556 | LAST, Lucy | SA | Merit | English | |
| 557 | LAST, Lucy | SA | Merit | General Mathematics | |
| 558 | LAST, Lucy | SA | Merit | Physical Education | |
| 559 | LATTANZIO, Porsche | SA | Merit | Integrated Learning B | |
| 560 | LATU, Lynda Katalina | SA | Merit | Solo Performance | |
| 561 | LAU, Irene | SA | Merit | Visual Arts - Design | |
| 562 | LAW, Annabelle | SA | Merit | Religion Studies | |
| 563 | LAWRENCE, Carla | SA | Merit | Drama | |
| 564 | LAWSON, Ethan | SA | Merit | English | |
| 565 | LAWSON, Macey Kira | SA | Merit | Systems and Control Products I | |
| 566 | LAYCOCK, Hudson | SA | Merit | English | |
| 567 | LE MOTTEE ROBINSON, Alec | SA | Merit | Physical Education | |
| 568 | LE, Minh-Chau Hoang | SA | Merit | Chemistry | |
| 569 | LE, Minh-Chau Hoang | SA | Merit | English | |
| 570 | LEAK, Ella | SA | Merit | Food and Hospitality | |
| 571 | LEE, Felicity Huey | SA | Merit | Psychology | |
| 572 | LEE, Isabel Wei-Yenn | SA | Merit | English | |
| 573 | LEE, Isabel Wei-Yenn | SA | Merit | Performance Special Study | |
| 574 | LEE, Tz-Shane | SA | Merit | English | |
| 575 | LEHMAN, Courtney Marie | SA | Merit | Biology | |
| 576 | LENG, Chanlini | SA | Merit | Khmer (Continuers) | |
| 577 | LESI, Edmario | SA | Merit | English Literary Studies | |
| 578 | LESI, Edmario | SA | Merit | Visual Arts - Art | |
| 579 | LEUNG, Yiu Kai | SA | Merit | Essential English | |
| 580 | LEVINGS, Thomas Nigel | SA | Merit | Musicianship | |
| 581 | LEWIS, Alexandra | SA | Merit | English | |
| 582 | LEWIS, Cody Jane | SA | Merit | General Mathematics | |