This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2003, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 800 | Mesbah, Jaleel | SA | Merit | English as Second Language Studies | |
| 801 | Mesbah, Jaleel | SA | Merit | Mathematical Studies | |
| 802 | Mesbah, Jaleel | SA | Merit | Physics | |
| 803 | Mesbah, Jaleel | SA | Merit | Specialist Mathematics | |
| 804 | Mesbah, Jaleel | SA | Prize: Campbell Award for Students Attending Government Schools | ||
| 805 | Mesbah, Jaleel | Unley High School | Netherby | Australian Student Prize | |
| 806 | Michael, Nicole | SA | Merit | Child Studies | |
| 807 | Micik, Christopher Jan | SA | Merit | Economics | |
| 808 | Midson, Cassie | SA | Merit | Mathematical Methods | |
| 809 | Mieglich, Kate Narelle | SA | Merit | English Communications | |
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| 810 | Migliaccio, Natalie | SA | Merit | Health Education | |
| 811 | Mignone, Jessica | SA | Merit | Art Practical | |
| 812 | Millard, Sarah Kathryn | SA | Merit | Child Studies | |
| 813 | Millard, Sarah Kathryn | SA | Merit | English Communications | |
| 814 | Miller, Matthew | SA | Merit | English Communications | |
| 815 | Millevoi, Fuchsia Lucy | SA | Merit | Visual Arts Studies | |
| 816 | Milne, Kimberley Janette | SA | Merit | Legal Studies | |
| 817 | Milton, Jamie Francis | SA | Merit | English Communications | |
| 818 | Milton, Jamie Francis | SA | Merit | Physical Education | |
| 819 | Minervini, Rebecca | SA | Merit | Business Studies | |
| 820 | Minne, Ruth Elizabeth | SA | Merit | Child Studies | |
| 821 | Missikos, William Matthew Mills | SA | Merit | Legal Studies | |
| 822 | Mitchell, Clare Elizabeth Mary | SA | Merit | Ensemble Performance | |
| 823 | Mitchell, Eleanor Claire | SA | Merit | Mathematical Studies | |
| 824 | Mitchell, Elizabeth Rose | SA | Merit | Physical Education | |
| 825 | Mohan, Preethi | SA | Merit | English as Second Language Studies | |
| 826 | Moloney, Jacqueline Jane | SA | Merit | Tourism | |
| 827 | Moo, Kat One | SA | Merit | Design Practical | |
| 828 | Mooney, Louise Elizabeth | SA | Merit | Child Studies | |
| 829 | Mooney, Louise Elizabeth | SA | Merit | Geography Studies | |
| 830 | Moore, Hannah Frances | SA | Merit | English Studies | |
| 831 | Moore, Thomas Kelso | SA | Merit | Design Practical | |
| 832 | Morris, Julia | SA | Merit | Japanese (Continuers) | |
| 833 | Mortimer, Jonathan Blake McKenzie | SA | Merit | Music Individual Study | |
| 834 | Mortimer, Jonathan Blake McKenzie | SA | Merit | Solo Performance | |
| 835 | Mountzouris, Stephanie | SA | Merit | Visual Arts Studies | |
| 836 | Mu, Lisa Cun | SA | Merit | Chemistry | |
| 837 | Mu, Lisa Cun | SA | Merit | Mathematical Studies | |
| 838 | Mu, Lisa Cun | SA | Merit | Specialist Mathematics | |
| 839 | Mu, Lisa Cun | Grant High School | Mount Gambier | Australian Student Prize | |
| 840 | Mueller, Annina Helene | SA | Merit | Electronic Publishing | |
| 841 | Mueller, Annina Helene | SA | Merit | German (Continuers) | |
| 842 | Muir, Catherine Emma | SA | Merit | English Communications | |
| 843 | Mumford, Rebecca Jane | SA | Merit | Food and Hospitality | |
| 844 | Munslow, Sarah Ann | SA | Merit | Mathematical Applications | |
| 845 | Murdock, Amelia | SA | Merit | English Studies | |
| 846 | Murdock, Amelia | SA | Merit | Mathematical Applications | |
| 847 | Murdock, Amelia | SA | Merit | Studies of Religion | |
| 848 | Murphy, Adam | SA | Merit | Physical Education | |
| 849 | Musolino, Mathew | SA | Merit | Ensemble Performance | |