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.
| 715 | Lobo, Yolanka | SA | Merit | Visual Arts Studies | |
| 716 | Lorenzin, Luke William | SA | Merit | Outdoor Education | |
| 717 | Luan, Tian | SA | Merit | Chemistry | |
| 718 | Luan, Tian | SA | Merit | Mathematical Studies | |
| 719 | Luckman, Georgina Annabelle | SA | Merit | Child Studies | |
| 720 | Luckman, Jessica Kate | SA | Merit | Child Studies | |
| 721 | Luu, Helen | SA | Merit | Legal Studies | |
| 722 | Ly, Lisa | SA | Merit | English as Second Language Studies | |
| 723 | Lynch, Lisa Kathleen | SA | Merit | Food and Hospitality | |
| 724 | Lynch, Sarah Elizabeth | SA | Merit | Food and Hospitality | |
| |
|||||
| 725 | Lyndell, Lyndell | SA | Merit | Tourism | |
| 726 | Lyne, Katrina Margaret | SA | Merit | Biology | |
| 727 | Ma, Nylanda Lai-Han T | SA | Merit | Biology | |
| 728 | Maddocks, Carolyn | SA | Merit | Solo Performance | |
| 729 | Madigan, Bonnie-Fay | SA | Merit | English Studies | |
| 730 | Maguire, Kirsten Lorraine | SA | Merit | Geography Studies | |
| 731 | Mah, Jonathon Shao-Feng | SA | Merit | Information Technology Studies | |
| 732 | Mah, Jonathon Shao-Feng | SA | Merit | Mathematical Studies | |
| 733 | Mann, Alan | SA | Merit | Chemistry | |
| 734 | Mann, Alan | SA | Merit | Mathematical Studies | |
| 735 | Mann, Alan | SA | Merit | Physics | |
| 736 | Manuelli, Stephanie | SA | Merit | Vocational Studies A | |
| 737 | Manuelli, Stephanie | SA | Merit | Vocational Studies B | |
| 738 | Marafiote, Rosa | SA | Merit | Italian (Continuers) | |
| 739 | Marinkovic, Martina | SA | Merit | Visual Arts Studies | |
| 740 | Markovic, Dusan | SA | Merit | Chemistry | |
| 741 | Markovic, Dusan | SA | Merit | Physics | |
| 742 | Markow, Alexandra Olimbia | SA | Merit | Studies of Societies | |
| 743 | Marshallsay, Jessica Elaine | SA | Merit | Australian History | |
| 744 | Martin, Alastair | SA | Merit | Accounting Studies | |
| 745 | Martin, Alastair | SA | Merit | Business Studies | |
| 746 | Martin, Amy Susan | SA | Merit | Electronic Publishing | |
| 747 | Martin, Catriona Alice Stuart | SA | Merit | Biology | |
| 748 | Martin, Catriona Alice Stuart | SA | Merit | Chemistry | |
| 749 | Martin, George | SA | Merit | Physical Education | |
| 750 | Martin, Jess | SA | Merit | Physical Education | |
| 751 | Martin, Josiah Thomas | SA | Merit | Mathematical Studies | |
| 752 | Martin, Lucy Elizabeth | SA | Merit | Chemistry | |
| 753 | Martin, Lucy Elizabeth | SA | Merit | Mathematical Studies | |
| 754 | Martin, Lucy Elizabeth | SA | Merit | Physics | |
| 755 | Martin, Lucy Elizabeth | St Peters Girls School | Stonyfell | Australian Student Prize | |
| 756 | Martin, Timothy | SA | Merit | Media Production and Analysis | |
| 757 | Mason, Andrew Bernard | SA | Merit | Biology | |
| 758 | Massey, Thomas Andrew | SA | Merit | Outdoor Education | |
| 759 | Mates, Sean Allan | SA | Merit | Energy | |
| 760 | Matheson, Danielle Renee | SA | Merit | Language and the Community | |
| 761 | Mathews, Kate Eleanor | SA | Merit | Classical Studies | |
| 762 | Mathews, Kate Eleanor | SA | Merit | English Studies | |
| 763 | Mathews, Megan Sue | SA | Merit | Foods and the Community | |
| 764 | Mattschoss, Lisa Alison | SA | Merit | Child Studies | |