This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2015, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 840 | O'Brien, Amani Lillian | SA | Merit | Research Project B | |
| 841 | O'Connell, Tess Ciara | SA | Merit | Mathematical Applications | |
| 842 | O'Malley, Annabel Jane | SA | Merit | Business and Enterprise | |
| 843 | O'Malley, Georgia Marie | SA | Merit | Research Project B | |
| 844 | O'Neill, Shannon Paige | SA | Merit | Mathematical Applications | |
| 845 | Oakley, Martin Gareth | SA | Merit | Communication Products II | |
| 846 | Oakley, Martin Gareth | SA | Merit | Ensemble Performance | |
| 847 | Oka, Ryohei | SA | Merit | Business and Enterprise | |
| 848 | Oka, Ryohei | SA | Merit | Research Project B | |
| 849 | Olekalns, Maris Honi Dolling | SA | Merit | Geography | |
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| 850 | Onorato, Gabriella | SA | Merit | Food and Hospitality | |
| 851 | Opie, Mikayla Emily | SA | Merit | Research Project B | |
| 852 | Osborne, Alice Elizabeth | SA | Merit | Drama | |
| 853 | Osborne, Paris Eloise | SA | Merit | Research Project B | |
| 854 | Ostendorf, Paula | SA | Merit | German (Continuers) | |
| 855 | Ottey, Brooke | SA | Merit | Health | |
| 856 | Owen, Sophie | SA | Merit | Information Processing and Publishing | |
| 857 | Pain, Amanda Emily | SA | Merit | Food and Hospitality | |
| 858 | Palasis, Georgia Caitlin | SA | Merit | Mathematical Studies | |
| 859 | Palasis, Georgia Caitlin | SA | Merit | Specialist Mathematics | |
| 860 | Panayiaris, Niki | SA | Merit | Research Project B | |
| 861 | Papadopoulos, Olivia | SA | Merit | Research Project B | |
| 862 | Papazis, Nicola | SA | Merit | Child Studies | |
| 863 | Pappas, Alana | SA | Merit | Drama | |
| 864 | Pappas, Alana | SA | Merit | Research Project B | |
| 865 | Parrott, Priscilla | SA | Merit | Communication Products II | |
| 866 | Pashalidis, Danielle | SA | Merit | Australian and International Politics | |
| 867 | Pashalidis, Danielle | SA | Merit | Psychology | |
| 868 | Patacca, Emily Catherine | SA | Merit | English Communications | |
| 869 | Pate, Chloe Ellen | SA | Merit | Cross-Disciplinary Studies | |
| 870 | Paterson, Jade Je In | SA | Merit | Food and Hospitality | |
| 871 | Paterson, Jade Je In | SA | Merit | Performance Special Study | |
| 872 | Paterson, Jade Je In | SA | Prize: Don Maynard Music Prize | Music | |
| 873 | Patterson, Alexandra | SA | Merit | English Communications | |
| 874 | Patterson, Alexandra | SA | Merit | Research Project B | |
| 875 | Patterson, Morgan Ruby | SA | Merit | Food and Hospitality | |
| 876 | Patterson, Morgan Ruby | SA | Merit | Research Project B | |
| 877 | Pay, Josiah Gabriel | SA | Merit | Drama | |
| 878 | Pearce, Annie Matilda | SA | Merit | Research Project B | |
| 879 | Pearce, Vanessa | SA | Merit | Chinese (Continuers) | |
| 880 | Peberdy, Hamish Thomas | SA | Merit | Business and Enterprise | |
| 881 | Pemberton, Madeleine | SA | Merit | Research Project B | |
| 882 | Penfold, Rhianna | SA | Merit | Chemistry | |
| 883 | Penfold, Rhianna | SA | Merit | English Communications | |
| 884 | Penfold, Rhianna | SA | Merit | Research Project B | |
| 885 | Penglis, Georgia Irene | SA | Merit | Psychology | |
| 886 | Perrotta, Antonio | SA | Merit | Biology | |
| 887 | Perry, Maddison Elise | SA | Merit | Research Project B | |
| 888 | Petchey, James Frederick | SA | Merit | Biology | |
| 889 | Petchey, James Frederick | SA | Merit | English Communications | |