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.
| 592 | LI, Zixin | SA | Merit | Psychology | |
| 593 | LIAO, Yebaihe | SA | Merit | Performance Special Study | |
| 594 | LIDUMS, Hugo | SA | Merit | Visual Arts - Design | |
| 595 | LIDUMS, Martins | SA | Merit | Chemistry | |
| 596 | LILL, Caleb Ben | SA | Merit | Biology | |
| 597 | LIM, Zi Jun | SA | Merit | Mathematical Methods | |
| 598 | LIMONGELLI, Olivia | SA | Merit | Research Project B | |
| 599 | LIN, Ben Jiayu | SA | Merit | Mathematical Methods | |
| 600 | LIN, Junying | SA | Merit | Accounting | |
| 601 | LIN, Junying | SA | Merit | Mathematical Methods | |
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| 602 | LIN, Junying | SA | Merit | Specialist Mathematics | |
| 603 | LIN, Junying | SA | Merit | Workplace Practices | |
| 604 | LINDSAY, Eleanore Claire | SA | Merit | Research Project B | |
| 605 | LING, Sheridan | SA | Merit | Biology | |
| 606 | LING, Sheridan | SA | Merit | Mathematical Methods | |
| 607 | LING, Sheridan | SA | Merit | Specialist Mathematics | |
| 608 | LITTLE, Holly | SA | Merit | Ensemble Performance | |
| 609 | LIU, Lucinda | SA | Merit | Research Project B | |
| 610 | LIU, Yuqi | SA | Merit | Business and Enterprise | |
| 611 | LIU, Yuqi | SA | Merit | English as an Additional Language | |
| 612 | LIVORI, Jackson Mitchell | SA | Merit | Legal Studies | |
| 613 | LLOYD, Alison Judith | SA | Merit | English | |
| 614 | LLOYD, Alison Judith | SA | Merit | Research Project B | |
| 615 | LLOYD, Alison Judith | SA | Merit | Visual Arts - Art | |
| 616 | LOBOTESIS, Dionysios Nicholas | SA | Merit | English Literary Studies | |
| 617 | LOCK, Aidan | SA | Merit | Food and Hospitality | |
| 618 | LOCK-WEIR, Lewis Christopher | SA | Merit | Legal Studies | |
| 619 | LOCKWOOD, Kane Angus | SA | Merit | General Mathematics | |
| 620 | LOVEDAY, Lucy | SA | Merit | Society and Culture | |
| 621 | LOVELL, Austin | SA | Merit | Integrated Learning A | |
| 622 | LOVELL, Austin | SA | Merit | Media Studies | |
| 623 | LOXTON, Nicholas John | SA | Merit | Business and Enterprise | |
| 624 | LU, Jason | SA | Merit | Research Project B | |
| 625 | LUDBROOK, Sophie | SA | Merit | Workplace Practices | |
| 626 | LUI, Ka Shing | SA | Merit | French (Beginners) | |
| 627 | LUSCOMBE, Fletcher | SA | Merit | Workplace Practices | |
| 628 | LUTHRA, Anchal | SA | Merit | Information Processing and Publishing | |
| 629 | LY, Jason Wei-Jie | SA | Merit | Communication Products II | |
| 630 | MACDONALD, Calista | SA | Merit | Research Project B | |
| 631 | MADIKE, Reema | SA | Merit | Information Processing and Publishing | |
| 632 | MADIKE, Reema | SA | Merit | Physical Education | |
| 633 | MAGEE, Grace Catherine | SA | Merit | Visual Arts - Art | |
| 634 | MAK, Jin-Ken | SA | Merit | Economics | |
| 635 | MAK, Jin-Ken | SA | Merit | Mathematical Methods | |
| 636 | MALLAWAACHCHI KANKANAMALAGE, Udara Madushani | SA | Merit | English as an Additional Language | |
| 637 | MALONEY, Laura | SA | Merit | English | |
| 638 | MANATAKIS, Eva | SA | Merit | General Mathematics | |
| 639 | MANNING, Reece | SA | Merit | Research Project B | |
| 640 | MANOCCHIO, Alyssa | SA | Merit | Scientific Studies | |
| 641 | MAOLANJIANG, Maidina | SA | Merit | English | |