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.
| 891 | O'Callaghan, Will Joseph | SA | Merit | Activating Identities and Futures | |
| 892 | O'Dea, Adele | SA | Merit | English | |
| 893 | O'Dea, Adele | SA | Merit | General Mathematics | |
| 894 | O'Grady, Jessica Jade | SA | Merit | Activating Identities and Futures | |
| 895 | O'Grady, Jessica Jade | SA | Merit | English | |
| 896 | O'Grady, Jessica Jade | SA | Merit | Psychology | |
| 897 | O'Leary, Kelly | SA | Merit | Biology | |
| 898 | O'Leary, Kelly | SA | Merit | Chemistry | |
| 899 | O'Loughlin, Maddison Georgia | SA | Merit | Psychology | |
| 900 | Oberdan, Vincent Joseph | SA | Merit | Chemistry | |
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| 901 | Obrenovic, Jovana | SA | Merit | Activating Identities and Futures | |
| 902 | Obrenovic, Jovana | SA | Merit | English | |
| 903 | Ogden, Ivy Anise | SA | Merit | Research Project B | |
| 904 | Ok, Yeseul | SA | Merit | Society and Culture | |
| 905 | Oliver-Lees, Maximilian | SA | Merit | Mathematical Methods | |
| 906 | Ong, Shu Yi | SA | Merit | Activating Identities and Futures | |
| 907 | Onyeizugbo, Miracle Chinedum | SA | Merit | Research Project B | |
| 908 | Ortiz, Natasha | SA | Merit | Research Project B | |
| 909 | Osborne, Kate Alice | SA | Merit | Biology | |
| 910 | Osborne, Zoe | SA | Merit | General Mathematics | |
| 911 | Oster, Lydia | SA | Merit | Essential English | |
| 912 | Otsuka, Shunyo | SA | Merit | Japanese (Continuers) | |
| 913 | Owen-Turner, Amelia | SA | Merit | English | |
| 914 | Owen-Turner, Amelia | SA | Merit | General Mathematics | |
| 915 | Owen-Turner, Amelia | SA | Merit | Spiritualities, Religion and Meaning | |
| 916 | Oxford, Thomas James | SA | Merit | Material Solutions | |
| 917 | Paliwal, Saanvi | SA | Merit | English | |
| 918 | Pansini-Clark, Zara | SA | Merit | Activating Identities and Futures | |
| 919 | Papageorgiou, Niki | SA | Merit | General Mathematics | |
| 920 | Papageorgiou, Niki | SA | Merit | Research Project B | |
| 921 | Parhas, Giorgio Vasili | SA | Merit | Society and Culture | |
| 922 | Parish, Aren Ern-Kang | SA | Merit | Material Solutions | |
| 923 | Park, Haein | SA | Merit | Chemistry | |
| 924 | Park, Haein | SA | Merit | Physics | |
| 925 | Park, Haein | SA | Merit | Specialist Mathematics | |
| 926 | Parker, Madeleine Eve | SA | Merit | Activating Identities and Futures | |
| 927 | Parker, Madeleine Eve | SA | Merit | Psychology | |
| 928 | Parkin, Mia Polly | SA | Merit | Outdoor Education | |
| 929 | Parkinson-Need, Emilia Jane | SA | Merit | General Mathematics | |
| 930 | Parrington, Mitchell Henry | SA | Merit | Research Project B | |
| 931 | Patching, Genevieve | SA | Merit | Psychology | |
| 932 | Pate, Caelyn | SA | Merit | Research Project B | |
| 933 | Patel, Shrey Premalkumar | SA | Merit | Mathematical Methods | |
| 934 | Pathirana, Horana Pathiranage Dona (Methuli) Dinaya | SA | Merit | Workplace Practices | |
| 935 | Patsouris, Dion George Peter | SA | Merit | English | |
| 936 | Payne, Lola | SA | Merit | Outdoor Education | |
| 937 | Pearce, Ruby | SA | Merit | English Literary Studies | |
| 938 | Pearce, Ruby | SA | Merit | General Mathematics | |
| 939 | Pearce, Ruby | SA | Merit | Physical Education | |
| 940 | Pearce, Ruby | Cabra Dominican College | Cumberland Park | Gov of SA SACE Award | |