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.
| 866 | Nguyen, Huy | SA | Merit | English as Second Language Studies | |
| 867 | Nguyen, Judy | SA | Merit | Computing Applications | |
| 868 | Nguyen, Lan Thi Truong | SA | Merit | English as Second Language Studies | |
| 869 | Nguyen, Sylvia | SA | Merit | English Studies | |
| 870 | Nguyen, Thi Thanh Truc | SA | Merit | Vietnamese (Continuers) | |
| 871 | Nguyen, Tuyet-Linh | SA | Merit | English as Second Language Studies | |
| 872 | Nguyen, Viet Tien | SA | Merit | Economics | |
| 873 | Nicholls, Donna | SA | Merit | Ensemble Performance | |
| 874 | Nicholson, Lydia Clare | SA | Merit | Drama Studies | |
| 875 | Nicholson, Lydia Clare | SA | Merit | English Studies | |
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| 876 | Nicolai, Kerry-Ann Joy | SA | Merit | Personal Documents | |
| 877 | Nikic, Lauren Kate | SA | Merit | English Studies | |
| 878 | Nishizawa, Tomoko | SA | Merit | Japanese (Continuers) | |
| 879 | Nitschke, Charmain | SA | Merit | Desktop Publishing | |
| 880 | Nitschke, Michael John | SA | Merit | Physical Education | |
| 881 | Noack, Michael Daniel | SA | Merit | Broadcasting and Multimedia B | |
| 882 | Nolan, Penelope Jane | SA | Merit | Language and the Community | |
| 883 | Noonan, Caitlin Elizabeth | SA | Merit | Biology | |
| 884 | Noonan, Caitlin Elizabeth | SA | Merit | Physical Education | |
| 885 | Northcott, Jessica Louise | SA | Merit | Outdoor Education | |
| 886 | Nosworthy, Elizabeth Evelyn | SA | Merit | Biology | |
| 887 | Nosworthy, Elizabeth Evelyn | SA | Merit | Chemistry | |
| 888 | Nowak, Anna | SA | Merit | Biology | |
| 889 | Nowak, Anna | SA | Merit | Physics | |
| 890 | Nuske, Kaylene | SA | Merit | Agricultural and Horticultural Studies II | |
| 891 | Nusrat, Shadiya | SA | Merit | Biology | |
| 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 | |
| 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 | |