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.
| 892 | O'Brien, Jane | SA | Merit | English Studies | |
| 893 | O'Brien, Jane | SA | Merit | Mathematical Applications | |
| 894 | O'Brien, Jane | SA | Merit | Tourism | |
| 895 | O'Brien, Lucas Ian | SA | Merit | Performance Special Study | |
| 896 | O'Brien, Lucas Ian | SA | Merit | Solo Performance | |
| 897 | O'Brien-Powell, Whitney | SA | Merit | Agricultural and Horticultural Principles | |
| 898 | O'Connell, Lauren Marie | SA | Merit | Business Documents | |
| 899 | O'Connell, Lauren Marie | SA | Merit | Tourism | |
| 900 | O'Donnell, Judith | SA | Merit | Health, Recreation and the Community | |
| 901 | O'Farrell, Shannon Amelia Lee | SA | Merit | English Studies | |
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| 902 | O'Hare-Carroll, Chloe Alissa | SA | Merit | Classical Studies | |
| 903 | O'Riley, Marny Nicole | SA | Merit | Biology | |
| 904 | O'Shea, Catherine | SA | Merit | Biology | |
| 905 | Oakley, Toby Josef | SA | Merit | Physical Education | |
| 906 | Oermann, Andrew | SA | Merit | Physical Education | |
| 907 | Oest, Raphaela Christina | SA | Merit | Business Studies | |
| 908 | Ohlmeyer, Louise Amy | SA | Merit | Biology | |
| 909 | Ohlmeyer, Louise Amy | SA | Merit | Chemistry | |
| 910 | Ohlmeyer, Louise Amy | SA | Merit | Mathematical Applications | |
| 911 | Olijnyk, Anna | SA | Merit | Geography Studies | |
| 912 | Olijnyk, Anna | SA | Merit | Politics | |
| 913 | Oliver, Dane Phillip | SA | Merit | Art Practical | |
| 914 | Oung, Dara | SA | Merit | English as Second Language Studies | |
| 915 | O’Hare-Carroll, Chloe | SA | Prize: Classical Association of SA Prize | Classical Studies | |
| 916 | Packer, Melanie Beth | SA | Merit | Legal Studies | |
| 917 | Packer, Melanie Beth | SA | Merit | Mathematical Methods | |
| 918 | Page, Alexander William | SA | Merit | Mathematical Studies | |
| 919 | Pain, Anthony Max | SA | Merit | Indonesian (Accelerated) | |
| 920 | Paiva, Joe | SA | Merit | Agricultural and Horticultural Studies I | |
| 921 | Palmer, Alyse Vivienne | SA | Merit | Geography Studies | |
| 922 | Palmer, Jane Elizabeth | SA | Merit | Solo Performance | |
| 923 | Palmer, Kendall | SA | Merit | Work and the Community | |
| 924 | Palmer, Marcus | SA | Merit | Information Technology | |
| 925 | Papanotis, Shelley Dennis | SA | Merit | Design, Construction and the Community | |
| 926 | Papanotis, Shelley Dennis | SA | Merit | The Arts and the Community | |
| 927 | Papapandazis, Ellen | SA | Merit | Child Studies | |
| 928 | Paphitis, Katherine | SA | Merit | Art Practical | |
| 929 | Paphitis, Katherine | SA | Merit | English Studies | |
| 930 | Parker, Jarrad | SA | Merit | Mathematical Methods | |
| 931 | Parker, Steven Mark | SA | Merit | Mathematical Studies | |
| 932 | Parrish, Tahlia Jayne | SA | Merit | Economics | |
| 933 | Parry, Alexandra | SA | Merit | Biology | |
| 934 | Parry, Alexandra | SA | Merit | Visual Arts Studies | |
| 935 | Partridge, Emma Lee | SA | Merit | English Communications | |
| 936 | Parvar, Saman | SA | Merit | Chemistry | |
| 937 | Parvar, Saman | SA | Merit | Mathematical Studies | |
| 938 | Parvar, Saman | SA | Merit | Physics | |
| 939 | Parvar, Saman Laleh | Norwood Morialta High School | Magill | Australian Student Prize | |
| 940 | Pascale, Cecilia Katherine | SA | Merit | English Studies | |
| 941 | Paschke, Eliza Randel | SA | Merit | Food and Hospitality | |