This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2023, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 864 | Nguyen, Darren | St Peters College | St Peters | Gov of SA SACE Award | |
| 865 | Nguyen, Dinh Khoi | SA | Merit | English as an Additional Language | |
| 866 | Nguyen, Halena Nhu-Han | SA | Merit | Modern History | |
| 867 | Nguyen, Le Minh | SA | Merit | Activating Identities and Futures | |
| 868 | Nguyen, Thi Thanh (Tracy) | SA | Merit | Vietnamese (Background Speakers) | |
| 869 | Nguyen, Vo Trung Nguyen | SA | Merit | Digital Technologies | |
| 870 | Nichol, Holly May | SA | Merit | Psychology | |
| 871 | Nicholas, Haylee Emeli | SA | Merit | Visual Arts - Art | |
| 872 | Nicholas, Kalliopi Paraskevi | SA | Merit | Drama | |
| 873 | Nicholl, Chelsea Jia-Wen | SA | Merit | English | |
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| 874 | Niculescu, Adrian | SA | Merit | Activating Identities and Futures | |
| 875 | Niculescu, Adrian | Sacred Heart College | Somerton Park | Gov of SA SACE Award | |
| 876 | Ninio, Sarah Elizabeth | SA | Merit | Research Project B | |
| 877 | Ninnes, Eleftherios Arthur Dedes | SA | Merit | Specialist Mathematics | |
| 878 | Nitschke, Anja | SA | Merit | Research Project B | |
| 879 | Nitschke, Edward | SA | Merit | Essential Mathematics | |
| 880 | Nitschke, Edward | SA | Merit | Health and Wellbeing | |
| 881 | Nitschke, Henry | Northern Adelaide Senior College | Elizabeth | Gov of SA SACE Award | |
| 882 | Nitschke, Henry George | SA | Merit | Essential Mathematics | |
| 883 | Nitschke, Henry George | SA | Merit | Health and Wellbeing | |
| 884 | Noack, Livinia Grace | SA | Merit | Integrated Learning A | |
| 885 | Noronha, Alexis | SA | Merit | Activating Identities and Futures | |
| 886 | Noronha, Alexis | SA | Merit | Spiritualities, Religion and Meaning | |
| 887 | Norris, Tommy Ronald Trevor | SA | Merit | General Mathematics | |
| 888 | O'Callaghan, Will Joseph | SA | Merit | Activating Identities and Futures | |
| 889 | O'Dea, Adele | SA | Merit | English | |
| 890 | O'Dea, Adele | SA | Merit | General Mathematics | |
| 891 | O'Grady, Jessica Jade | SA | Merit | Activating Identities and Futures | |
| 892 | O'Grady, Jessica Jade | SA | Merit | English | |
| 893 | O'Grady, Jessica Jade | SA | Merit | Psychology | |
| 894 | O'Leary, Kelly | SA | Merit | Biology | |
| 895 | O'Leary, Kelly | SA | Merit | Chemistry | |
| 896 | O'Loughlin, Maddison Georgia | SA | Merit | Psychology | |
| 897 | Oberdan, Vincent Joseph | SA | Merit | Chemistry | |
| 898 | Obrenovic, Jovana | SA | Merit | Activating Identities and Futures | |
| 899 | Obrenovic, Jovana | SA | Merit | English | |
| 900 | Ogden, Ivy Anise | SA | Merit | Research Project B | |
| 901 | Ok, Yeseul | SA | Merit | Society and Culture | |
| 902 | Oliver-Lees, Maximilian | SA | Merit | Mathematical Methods | |
| 903 | Ong, Shu Yi | SA | Merit | Activating Identities and Futures | |
| 904 | Onyeizugbo, Miracle Chinedum | SA | Merit | Research Project B | |
| 905 | Ortiz, Natasha | SA | Merit | Research Project B | |
| 906 | Osborne, Kate Alice | SA | Merit | Biology | |
| 907 | Osborne, Zoe | SA | Merit | General Mathematics | |
| 908 | Oster, Lydia | SA | Merit | Essential English | |
| 909 | Otsuka, Shunyo | SA | Merit | Japanese (Continuers) | |
| 910 | Owen-Turner, Amelia | SA | Merit | English | |
| 911 | Owen-Turner, Amelia | SA | Merit | General Mathematics | |
| 912 | Owen-Turner, Amelia | SA | Merit | Spiritualities, Religion and Meaning | |
| 913 | Oxford, Thomas James | SA | Merit | Material Solutions | |