This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2021, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 688 | MacDonald, Abby-Rose | SA | Merit | Health and Wellbeing | |
| 689 | MacH, Kevin | SA | Merit | English | |
| 690 | Mackay, Chloe Elizabeth | SA | Merit | Interdisciplinary Learning and the Community | |
| 691 | Mackenzie, Ada | SA | Merit | Research Project B | |
| 692 | Mackenzie, Tavish | SA | Merit | Integrated Learning A | |
| 693 | Macleod, Juliet Kathryn | SA | Merit | Research Project B | |
| 694 | Madden, Sean | SA | Merit | Material Solutions | |
| 695 | Maddren, Bowen | SA | Merit | Research Project B | |
| 696 | Madigan, Daisy | SA | Merit | Workplace Practices | |
| 697 | Maerschel, Portia | SA | Merit | Physical Education | |
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| 698 | Magiarapis, Amelia Kate | SA | Merit | Research Project B | |
| 699 | Magnus, Jasmine | SA | Merit | Workplace Practices | |
| 700 | Mah, Vivian | SA | Merit | Research Project B | |
| 701 | Maiello, Ellen Grace | SA | Merit | Physical Education | |
| 702 | Maier, Daniel Joseph | SA | Merit | Research Project B | |
| 703 | Mair, Taras Warren | SA | Merit | Research Project B | |
| 704 | Makki, Ali | SA | Merit | Biology | |
| 705 | Malhotra, Kabir | SA | Merit | Research Project B | |
| 706 | Man, Kristopher Nelson | SA | Merit | Music Studies | |
| 707 | Manavis, Helena Marie | SA | Merit | English | |
| 708 | Manguera, Princess Katrina Manalili | SA | Merit | Society and Culture | |
| 709 | Manifold, Annabel Elizabeth | SA | Merit | Physical Education | |
| 710 | Manifold, Annabel Elizabeth | SA | Merit | Research Project B | |
| 711 | Marafioti, Isaac | SA | Merit | Psychology | |
| 712 | Marciano, Alexander Lewis | SA | Merit | Mathematical Methods | |
| 713 | Marciano, Alexander Lewis | SA | Merit | Specialist Mathematics | |
| 714 | Marcinkowski, Ashley | SA | Merit | Research Project B | |
| 715 | Markou, Milla | SA | Merit | Research Project B | |
| 716 | Marlow, Monique Lara | SA | Merit | English | |
| 717 | Maronich, Milla Stephanie | SA | Merit | Nutrition | |
| 718 | Marshall, Tara Jane | SA | Merit | English | |
| 719 | Marston, Tayla | SA | Merit | Food and Hospitality | |
| 720 | Martin, Jyothika Theresa | SA | Merit | English as an Additional Language | |
| 721 | Martin, Madison Ann | SA | Merit | Child Studies | |
| 722 | Mason-Tapping, Alice | SA | Merit | English Literary Studies | |
| 723 | Masullo, Alessio | SA | Merit | Integrated Learning A | |
| 724 | Mathews, Ross | SA | Merit | English | |
| 725 | Mathie, Bridey Jaslyn | SA | Merit | Food and Hospitality | |
| 726 | Matkovic, Liam Antony | SA | Merit | Essential Mathematics | |
| 727 | Matteo, Zara | SA | Merit | English | |
| 728 | Matz, Owen William | SA | Merit | Research Project B | |
| 729 | Mauviel, Olivia | SA | Merit | Research Project B | |
| 730 | Mavraidi, Eleni | SA | Merit | Research Project B | |
| 731 | Maxted, Brianna Lee | SA | Merit | Chemistry | |
| 732 | Maxted, Brianna Lee | SA | Merit | Physics | |
| 733 | McClements, Iona Mae | SA | Merit | Research Project B | |
| 734 | McDonald, Cooper Jackson | SA | Merit | Accounting | |
| 735 | McDonald, Mikaylah | SA | Merit | Biology | |
| 736 | McDonald, Mikaylah | SA | Merit | Research Project B | |
| 737 | McGough, Sofia Jade | SA | Merit | Research Project B | |