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.
| 691 | Mangelsen, Rebecca | SA | Merit | Biology | |
| 692 | Mangelsen, Rebecca | SA | Merit | General Mathematics | |
| 693 | Mangi, Muhammad Faraz | SA | Merit | Biology | |
| 694 | Mangi, Muhammad Faraz | SA | Merit | English Literary Studies | |
| 695 | Manguera, Princess Katrina Manalili | SA | Merit | Research Project B | |
| 696 | Manifold, Sophie | SA | Merit | Research Project B | |
| 697 | Maniraj, Thinakaran | SA | Merit | Research Project B | |
| 698 | Marano, Joel | SA | Merit | Society and Culture | |
| 699 | Marchesan, Simone | SA | Merit | Chemistry | |
| 700 | Marchesan, Simone | SA | Merit | English | |
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| 701 | Maritz, Jonathan | SA | Merit | Research Project B | |
| 702 | Marshall, Aylish | SA | Merit | Dance | |
| 703 | Martin, James Alexander | SA | Merit | Drama | |
| 704 | Martin, Joshua Zak | SA | Merit | Food and Hospitality | |
| 705 | Marzouk, Chloe | SA | Merit | Research Project B | |
| 706 | Masefield, Jaeda | SA | Merit | Research Project B | |
| 707 | Masefield, Jasmine | SA | Merit | Research Project B | |
| 708 | Maslin, Eliza Grace | SA | Merit | Health | |
| 709 | Maslin, Isabelle Marie | SA | Merit | Interdisciplinary Learning and the Community | |
| 710 | Maslin, Isabelle Marie | SA | Merit | STEM and the Community | |
| 711 | Materne, Thomas | SA | Merit | Digital Technologies | |
| 712 | Mathew, Sam | SA | Merit | Research Project B | |
| 713 | Mathew-Klose, Mia | SA | Merit | Mathematical Methods | |
| 714 | Matkovic, Liam Antony | SA | Merit | Chemistry | |
| 715 | Matthias, Greta | SA | Merit | Mathematical Methods | |
| 716 | Matthias, Greta | Modbury High School | Modbury | Gov of SA SACE Award | |
| 717 | Matto, Portia | SA | Merit | Food and Hospitality | |
| 718 | Mauviel, Charlotte Rose | SA | Merit | General Mathematics | |
| 719 | Mauviel, Charlotte Rose | SA | Merit | Modern History | |
| 720 | Mayo, Thomas Oliver | SA | Merit | Research Project B | |
| 721 | Mazumdar, Neil Kumar | SA | Merit | Physics | |
| 722 | Mc Glashan, Rebecca | SA | Merit | Health | |
| 723 | McArdle, Jack Harvey | SA | Merit | English | |
| 724 | McCann, Oscar | SA | Merit | Research Project B | |
| 725 | McCarthy, Cian Thomas Meath | SA | Merit | General Mathematics | |
| 726 | McCarthy, Sophie Isobel | SA | Merit | Mathematical Methods | |
| 727 | McCarthy, Sophie Isobel | SA | Merit | Physics | |
| 728 | McClean, Ella Paige Peachey | SA | Merit | Music Explorations | |
| 729 | McConnel, Lily | SA | Merit | General Mathematics | |
| 730 | McConnell-Daish, Harriet Jessamine | SA | Merit | English | |
| 731 | McDonald, Michaela | SA | Merit | Research Project B | |
| 732 | McDougall, Abigail Jayne | SA | Merit | English Literary Studies | |
| 733 | McEwan, Casey John | SA | Merit | Research Project B | |
| 734 | McGarvey, Sophie Mai Williams | SA | Merit | Child Studies | |
| 735 | McGlaughlin, Sophie | SA | Merit | Biology | |
| 736 | McGlaughlin, Sophie | SA | Merit | Research Project B | |
| 737 | McGuire, James | SA | Merit | Research Project B | |
| 738 | Mckay, Kate | SA | Merit | Legal Studies | |
| 739 | Mckay, Kate | SA | Merit | Research Project B | |
| 740 | McKay, Kate | Loreto College | Marryatville | Gov of SA SACE Award | |