This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2021, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 881 | Patel, Hriday | SA | Merit | Specialist Mathematics | |
| 882 | Patel, Keya | SA | Merit | Mathematical Methods | |
| 883 | Patel, Shailee Dhaneshkumar | SA | Merit | Essential Mathematics | |
| 884 | Patel, Vraj | SA | Merit | Research Project B | |
| 885 | Paterson, Sophie Matilda | SA | Merit | Essential Mathematics | |
| 886 | Paul, Ashlea | SA | Merit | Religion Studies | |
| 887 | Paul, Ashlea | SA | Merit | Research Project B | |
| 888 | Pavia, Damiano Gabriel | SA | Merit | Biology | |
| 889 | Pavia, Damiano Gabriel | SA | Merit | English | |
| 890 | Pavia, Damiano Gabriel | SA | Merit | Research Project B | |
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| 891 | Payne, Elizabeth Grace | SA | Merit | Outdoor Education | |
| 892 | Pellizzari, Emma | SA | Merit | Digital Communication Solutions | |
| 893 | Percevault, Kyan | SA | Merit | Mathematical Methods | |
| 894 | Percival, Lucy Claire | SA | Merit | Biology | |
| 895 | Percival, Lucy Claire | SA | Merit | English Literary Studies | |
| 896 | Percival, Lucy Claire | SA | Merit | Research Project B | |
| 897 | Percy, Katherine Grace | SA | Merit | English | |
| 898 | Percy, Katherine Grace | SA | Merit | Society and Culture | |
| 899 | Perera, Dinan Sendiv | SA | Merit | Biology | |
| 900 | Perera, Dinan Sendiv | SA | Merit | Chemistry | |
| 901 | Perera, Dinan Sendiv | SA | Merit | Mathematical Methods | |
| 902 | Perera, Dinan Sendiv | SA | Merit | Music Performance - Ensemble | |
| 903 | Perin, Isabella | SA | Merit | Research Project B | |
| 904 | Perry, Kate | SA | Merit | Workplace Practices | |
| 905 | Pessios, Vesace Lourdes | SA | Merit | Business Innovation | |
| 906 | Peters, Helena Jai | SA | Merit | Food and Hospitality | |
| 907 | Pham, Andy | SA | Merit | English | |
| 908 | Pham, Anthony | SA | Merit | Mathematical Methods | |
| 909 | Pham, Anthony | SA | Merit | Physics | |
| 910 | Pham, Anthony | St Peters College | St Peters | Prize: Australian Institute of Physics Prize - Bronze Bragg Medal | Physics |
| 911 | Pham, Phuong Y Nhi | SA | Merit | English as an Additional Language | |
| 912 | Pham, Phuong Y Nhi | SA | Merit | Industry and Entrepreneurial Solutions | |
| 913 | Pham, Phuong Y Nhi | SA | Merit | Research Project B | |
| 914 | Pham, Van-Leon The | SA | Merit | Research Project A | |
| 915 | Phelan, Renae Rosemary | SA | Merit | Research Project B | |
| 916 | Phua, Erica Le-Yi | SA | Merit | Biology | |
| 917 | Piotto, Anton | SA | Merit | Research Project B | |
| 918 | Piyaratna, Malik Enrique | SA | Merit | Robotic and Electronic Systems | |
| 919 | Placucci, Parisa Linda | SA | Merit | Research Project B | |
| 920 | Podreka, Josip Giovanni | SA | Merit | Research Project B | |
| 921 | Politis, Macie Angelique | SA | Merit | Research Project B | |
| 922 | Poolan, Ashleigh Elizabeth | SA | Merit | Research Project B | |
| 923 | Popping, Oscar William | SA | Merit | Research Project B | |
| 924 | Portolesi, Catherine Anne Kay | SA | Merit | Research Project B | |
| 925 | Powell, Ellie-Grace Alice | SA | Merit | English | |
| 926 | Provatas, Alex | SA | Merit | Mathematical Methods | |
| 927 | Pryor, Georgia | SA | Merit | Research Project B | |
| 928 | Psevdos, Christo | SA | Merit | Visual Arts - Design | |
| 929 | Purdie, James | SA | Merit | Society and Culture | |
| 930 | Qin, Matthew Wang | SA | Merit | Biology | |