This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2023, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 648 | Laddipeerla, Siri | SA | Merit | Research Project B | |
| 649 | Laforgia, Tom | SA | Merit | Modern History | |
| 650 | Lally, Krysten May | SA | Merit | Biology | |
| 651 | Lally, Krysten May | SA | Merit | Research Project A | |
| 652 | Lam, Isabella | SA | Merit | Visual Arts - Art | |
| 653 | Lane-Ellis, Ryan | SA | Merit | Integrated Learning A | |
| 654 | Lang, Kayla Jade | SA | Merit | General Mathematics | |
| 655 | Lange, Ava Rose | SA | Merit | Activating Identities and Futures | |
| 656 | Lange, Ava Rose | SA | Merit | General Mathematics | |
| 657 | Langley, Jemima Alice | SA | Merit | Activating Identities and Futures | |
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| 658 | Launer, James Peter | SA | Merit | Material Solutions | |
| 659 | Laycock, Sophie | SA | Merit | Drama | |
| 660 | Le, Jade Thu Minh | SA | Merit | Biology | |
| 661 | Le, James Henry | SA | Merit | Activating Identities and Futures | |
| 662 | Le, James Henry | SA | Merit | Mathematical Methods | |
| 663 | Le, James Henry | SA | Merit | Music Performance - Ensemble | |
| 664 | Le, James Henry | SA | Merit | Music Performance - Solo | |
| 665 | Le, Joshua Tim Huu | SA | Merit | Biology | |
| 666 | Le, Joshua Tim Huu | SA | Merit | Chemistry | |
| 667 | Le, Joshua Tim Huu | SA | Merit | Mathematical Methods | |
| 668 | Le, Tam Nhu | SA | Merit | Research Project B | |
| 669 | Le, Tina | SA | Merit | Vietnamese (Continuers) | |
| 670 | Leathart, Eva Frances | SA | Merit | English Literary Studies | |
| 671 | Leathart, Eva Frances | SA | Merit | Legal Studies | |
| 672 | Lee, Chen | SA | Merit | Activating Identities and Futures | |
| 673 | Lee, Chen | SA | Merit | Japanese (Continuers) | |
| 674 | Lee, Eugene | SA | Merit | Mathematical Methods | |
| 675 | Lee, Ryan Jihwan | SA | Merit | Mathematical Methods | |
| 676 | Lee, Wilson Ching Hin | SA | Merit | Research Project B | |
| 677 | Lee, Wing Tung | SA | Merit | English | |
| 678 | Lehmann, Mikayla Emily | SA | Merit | Creative Arts | |
| 679 | Lehmann, Reuben | SA | Merit | Outdoor Education | |
| 680 | Leonow, Oscar Grant | SA | Merit | General Mathematics | |
| 681 | Leviton, Emily Rose | SA | Merit | Research Project B | |
| 682 | Lewis, Ebony | SA | Merit | Integrated Learning A | |
| 683 | Li, William | SA | Merit | Health and Wellbeing | |
| 684 | Liang, Jason Fuwen | SA | Merit | Research Project B | |
| 685 | Librandi, Natalie | SA | Merit | Spiritualities, Religion and Meaning | |
| 686 | Lim, Caitlan Mei Ruo | SA | Merit | English as an Additional Language | |
| 687 | Lim, Jason | SA | Merit | Biology | |
| 688 | Lim, Jason | SA | Merit | Nutrition | |
| 689 | Lim, Jason | SA | Merit | Specialist Mathematics | |
| 690 | Lim, Jason | Adelaide High School | Adelaide | Gov of SA SACE Award | |
| 691 | Lim, Jun Xian Bryce | SA | Merit | Research Project B | |
| 692 | Lim, Seongham (Matthew) | Pembroke School | Kensington Park | Gov of SA SACE Award | |
| 693 | Lim, Seonghan | SA | Merit | Chemistry | |
| 694 | Lim, Seonghan | SA | Merit | Physics | |
| 695 | Lin, Zoe | Temple Christian College Mile End Campus | Mile End | Gov of SA SACE Award | |
| 696 | Lin, Zoe Rebecca | SA | Merit | Physical Education | |
| 697 | Lin, Zoe Rebecca | SA | Merit | Psychology | |