This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2020, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 841 | Nitschke, Samuel Kym | SA | Merit | Mathematical Methods | |
| 842 | Nitschke, Samuel Kym | SA | Merit | Research Project B | |
| 843 | Nitschke, William James | SA | Merit | Research Project B | |
| 844 | Noble, Otis Harvey | SA | Merit | English Literary Studies | |
| 845 | Noble, Otis Harvey | SA | Merit | Geography | |
| 846 | Norman, Isabelle | SA | Merit | Drama | |
| 847 | Norman, Isabelle | SA | Merit | Music Performance - Solo | |
| 848 | Norman, Isabelle | St Peters Girls School | Stonyfell | Prize: Don Maynard Music Prize | Music |
| 849 | Norsworthy, Tayla Bree | SA | Merit | Psychology | |
| 850 | Noutz, Imogen Cate | SA | Merit | Research Project B | |
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| 851 | Nycz, Natasha | SA | Merit | General Mathematics | |
| 852 | O'Callaghan, Lauren Grace | SA | Merit | Research Project B | |
| 853 | O'Dea, Anthony | SA | Merit | Research Project B | |
| 854 | O'Dea, Anthony | SA | Merit | Specialist Mathematics | |
| 855 | O'Dea, Lucy | SA | Merit | Psychology | |
| 856 | O'Hara, Luke | SA | Merit | English | |
| 857 | O'Leary, Amy | SA | Merit | English | |
| 858 | O'Leary, Amy | SA | Merit | Research Project B | |
| 859 | O'Loughlin, Jacinta | SA | Merit | Essential English | |
| 860 | Oehler, Josephine | SA | Merit | Biology | |
| 861 | Oehler, Josephine | SA | Merit | Nutrition | |
| 862 | Olszewski, Nikki | SA | Merit | Child Studies | |
| 863 | Olszewski, Nikki | SA | Merit | Religion Studies | |
| 864 | Ong, Gavin Michael | SA | Merit | Mathematical Methods | |
| 865 | Onofrio, Ella | SA | Merit | Research Project B | |
| 866 | Ooi, Sean Xuan Ye | SA | Merit | Accounting | |
| 867 | Owens-Fleetwood, Kaelah | SA | Merit | General Mathematics | |
| 868 | Pabello, Yllor Abal | SA | Merit | Integrated Learning A | |
| 869 | Paddick (Mittal), Shaya Rose | SA | Merit | English | |
| 870 | Paddock, James Robert | SA | Merit | Material Solutions | |
| 871 | Paige, Felicity Jayne | SA | Merit | Agricultural Production | |
| 872 | Pain, Benjamin Jarrad | SA | Merit | Workplace Practices | |
| 873 | Palser, Zachary | SA | Merit | General Mathematics | |
| 874 | Palser, Zachary | SA | Merit | Legal Studies | |
| 875 | Panozzo, Jennifer Hazel | SA | Merit | English | |
| 876 | Paparella, Jordyn Tarquin | SA | Merit | Research Project B | |
| 877 | Papas, Elli | SA | Merit | General Mathematics | |
| 878 | Paranavithana, Shania | SA | Merit | English | |
| 879 | Pardo Teruel, Carolina | SA | Merit | Spanish (Continuers) | |
| 880 | Parhas, Panae | SA | Merit | Psychology | |
| 881 | Parisotto, Alana | SA | Merit | Specialist Mathematics | |
| 882 | Parker, Angus Noah | SA | Merit | Visual Arts - Design | |
| 883 | Parker, Ruby | SA | Merit | Psychology | |
| 884 | Patching, Bernadette | SA | Merit | Legal Studies | |
| 885 | Patel, Hriday | SA | Merit | Biology | |
| 886 | Patel, Hriday | SA | Merit | Mathematical Methods | |
| 887 | Paterson-Cleary, Mackenzie | SA | Merit | Psychology | |
| 888 | Patiniotis, Chloe Jade | SA | Merit | Research Project B | |
| 889 | Patsouris, Angelique Olympia | SA | Merit | English | |
| 890 | Paul, Sian | SA | Merit | Research Project B | |