This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2019, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 788 | O'Brien, Emma | SA | Merit | Psychology | |
| 789 | O'Dea, Anthony | SA | Merit | Mathematical Methods | |
| 790 | O'Grady, Sophie | SA | Merit | General Mathematics | |
| 791 | O'Neill, Brock John | SA | Merit | Research Project B | |
| 792 | Oats, Zachary | SA | Merit | Psychology | |
| 793 | Oats, Zachary | SA | Merit | Visual Arts - Art | |
| 794 | Odegaard, Mitchell | Salisbury High School | Salisbury North | Gov of SA Aboriginal Student SACE Award | |
| 795 | Odegaard, Mitchell Paul James | SA | Merit | Research Project B | |
| 796 | Olijnyk, Lucilla | SA | Merit | Research Project B | |
| 797 | Olszewski, Nikki | SA | Merit | Integrated Learning B | |
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| 798 | Osborn, Samuel James | SA | Merit | Biology | |
| 799 | Osborn, Thomas Henry | SA | Merit | Research Project B | |
| 800 | Padbury, Matilda Margaret | SA | Merit | Legal Studies | |
| 801 | Palm, Juliet Rose | SA | Merit | English | |
| 802 | Palm, Juliet Rose | SA | Merit | Integrated Learning A | |
| 803 | Panayiaris, Thomas | SA | Merit | Chemistry | |
| 804 | Panayiaris, Thomas | SA | Merit | Mathematical Methods | |
| 805 | Panozzo, Leo Francis | SA | Merit | English | |
| 806 | Papic, Jordan | SA | Merit | Health | |
| 807 | Papic, Jordan | SA | Merit | Religion Studies | |
| 808 | Parbery, Artemis Whiterose | SA | Merit | English | |
| 809 | Parhas, Panae | SA | Merit | Workplace Practices | |
| 810 | Park, Haewoon (Chris) | SA | Merit | Mathematical Methods | |
| 811 | Park, Haewoon (Chris) | SA | Merit | Specialist Mathematics | |
| 812 | Park, Joohyun | SA | Merit | Research Project B | |
| 813 | Parker, Angus Noah | SA | Merit | Research Project B | |
| 814 | Pasalidis, Grace Elyssa | SA | Merit | Music Performance - Ensemble | |
| 815 | Pathirana, Nuthara | SA | Merit | Workplace Practices | |
| 816 | Patterson, Jordan Alex | SA | Merit | Research Project B | |
| 817 | Pauling, Paris | SA | Merit | Research Project B | |
| 818 | Payne, Harrison James | SA | Merit | Research Project B | |
| 819 | Payze, Neve | Wilderness School | Medindie | Prize: John Lewis Medal and Prize | Geography |
| 820 | Payze, Neve Annice | SA | Merit | Geography | |
| 821 | Peacock, Charlotte Breagha | SA | Merit | Integrated Learning A | |
| 822 | Pearce, Gabrielle Joy | SA | Merit | Research Project B | |
| 823 | Pearson-McKenzie, Jade | SA | Merit | Research Project B | |
| 824 | Pearson-McKenzie, Jade | SA | Merit | Scientific Studies | |
| 825 | Peek, Millicent Soo-Hee | SA | Merit | Biology | |
| 826 | Penhall, Matthew Campbell | SA | Merit | Mathematical Methods | |
| 827 | Penhall, Matthew Campbell | SA | Merit | Physics | |
| 828 | Pensuk, Suepsan | SA | Merit | English | |
| 829 | Perara, Seran Dulkith | SA | Merit | Music Performance - Ensemble | |
| 830 | Perera, Seran Dulkith | SA | Merit | Biology | |
| 831 | Perera, Seran Dulkith | SA | Merit | Chemistry | |
| 832 | Perera, Seran Dulkith | SA | Merit | Music Performance - Solo | |
| 833 | Perera, Seran Dulkith | SA | Merit | Physics | |
| 834 | Perrott, Natasha Claire | SA | Merit | General Mathematics | |
| 835 | Petersen, Vanessa | SA | Merit | Religion Studies | |
| 836 | Peterson, Grace | SA | Merit | Society and Culture | |
| 837 | Pham, Anh Tuan (Jack) | SA | Merit | English as an Additional Language | |