This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2020, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 605 | Lacy, Madison | SA | Merit | English Literary Studies | |
| 606 | Lagana, Alyssa | SA | Merit | Psychology | |
| 607 | Lam, Caitlyn | SA | Merit | Research Project B | |
| 608 | Lam, Tien Nhat | SA | Merit | Chemistry | |
| 609 | Lane, Brandon Thomas | SA | Merit | Physics | |
| 610 | Lane, Imogen Airdrie | SA | Merit | Research Project B | |
| 611 | Langsmith, Angus Edward | SA | Merit | Agricultural Systems | |
| 612 | Larobina, Isabella Michelle | SA | Merit | Religion Studies | |
| 613 | Larobina, Isabella Michelle | SA | Merit | Research Project B | |
| 614 | Larwood, Ivy | SA | Merit | Italian (Continuers) | |
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| 615 | Larwood, Ivy | SA | Merit | Research Project B | |
| 616 | Laverde, Juliana | SA | Merit | Research Project B | |
| 617 | Lazarevich, Vasiliki | SA | Merit | Research Project B | |
| 618 | Le, Aiden Brooklyn | SA | Merit | Visual Arts - Design | |
| 619 | Le, Justin Tam | SA | Merit | Biology | |
| 620 | Le, Khanh Lynh | SA | Merit | Biology | |
| 621 | Le, Minh Khoi Peter | SA | Merit | English | |
| 622 | Le, Thien An | SA | Merit | Research Project B | |
| 623 | Lee, Aiden | SA | Merit | Mathematical Methods | |
| 624 | Lee, Alex Lok Mun | SA | Merit | Psychology | |
| 625 | Lee, Arabella Rose | SA | Merit | Business Innovation | |
| 626 | Lee, Dennis Jia Wei | SA | Merit | English | |
| 627 | Lee, Dennis Jia Wei | SA | Merit | Research Project B | |
| 628 | Lee, Lara Ai-Ting | SA | Merit | Creative Arts | |
| 629 | Lee, Michael | SA | Merit | Mathematical Methods | |
| 630 | Lee, Seunga | SA | Merit | English as an Additional Language | |
| 631 | Lemire, Jessica Charlotte | SA | Merit | Dance | |
| 632 | Lemmings, Thomas Frederick Basil | SA | Merit | Research Project B | |
| 633 | Lennard, Chloe Louise | SA | Merit | Work and the Community | |
| 634 | Lennon, Dylan Matthew | SA | Merit | Accounting | |
| 635 | Leonardis, Lauren | SA | Merit | Health | |
| 636 | Leong, Yue Mann | SA | Merit | Health | |
| 637 | Leong, Yue Mann | SA | Merit | Psychology | |
| 638 | Lethbridge, Fiona | SA | Merit | General Mathematics | |
| 639 | Lewis, Amy Mae | SA | Merit | Business and Enterprise | |
| 640 | Liew, Amy Jiahui | SA | Merit | English Literary Studies | |
| 641 | Lightfoot, Thomas Joseph | SA | Merit | Research Project B | |
| 642 | Likos, Samantha | SA | Merit | English | |
| 643 | Lillecrapp, Darcy Hugh | SA | Merit | Accounting | |
| 644 | Lim, Min Shen | SA | Merit | Mathematical Methods | |
| 645 | Lim, Paul | SA | Merit | Mathematical Methods | |
| 646 | Lim, Taehan | SA | Merit | English | |
| 647 | Lim, Taehan | SA | Merit | Physics | |
| 648 | Lim, Taehan | SA | Merit | Research Project B | |
| 649 | Lim, Zhi Yi | SA | Merit | English | |
| 650 | Lim, Zhi Yi | SA | Merit | Research Project B | |
| 651 | Ling, Cornas | SA | Merit | Chemistry | |
| 652 | Ling, Cornas | SA | Merit | Physics | |
| 653 | Ling, Kevin Tek-Loong | SA | Merit | Chemistry | |
| 654 | Ling, Kevin Tek-Loong | SA | Merit | Research Project B | |