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.
| 101 | Birchall, Georgina Rose | SA | Merit | Physical Education | |
| 102 | Bird, Tyler Jake Daniel | SA | Merit | Industry and Entrepreneurial Solutions | |
| 103 | Birkett, Winter Marie | SA | Merit | Modern History | |
| 104 | Birt, Freja Cederberg | SA | Merit | Research Project B | |
| 105 | Bishnoi, Vikram Aditya | SA | Merit | Essential Mathematics | |
| 106 | Bishop, Ethan | SA | Merit | Research Project B | |
| 107 | Bishop, Gabrielle Joy | SA | Merit | Biology | |
| 108 | Bishop, Gabrielle Joy | SA | Merit | Research Project B | |
| 109 | Bizzai, Demi Marie | SA | Merit | Essential Mathematics | |
| 110 | Blackwell, Benjamin Clinton | SA | Merit | Industry and Entrepreneurial Solutions | |
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| 111 | Blanksby, Jordan James | SA | Merit | Biology | |
| 112 | Blight, Annie Victoria | SA | Merit | Psychology | |
| 113 | Bogusz, Oliver Olaf | SA | Merit | Polish (Continuers) | |
| 114 | Bondoc, Stephanie Nicole | SA | Merit | Integrated Learning A | |
| 115 | Bowen, Damien | SA | Merit | Arts and the Community | |
| 116 | Bowen, Damien | SA | Merit | Work and the Community | |
| 117 | Bowes, Nicholas Lachlan | SA | Merit | Music Performance - Solo | |
| 118 | Boyd, Mercedes Elizabeth | SA | Merit | Essential English | |
| 119 | Boyley, Talisha May-Ann | SA | Merit | Research Project B | |
| 120 | Bradford, Max Joshua | SA | Merit | General Mathematics | |
| 121 | Bradley, William Christopher | SA | Merit | Biology | |
| 122 | Braendler, Angus | SA | Merit | Research Project B | |
| 123 | Braitling, Ryan Matthew | SA | Merit | Digital Communication Solutions | |
| 124 | Breen, Niamh | SA | Merit | Research Project B | |
| 125 | Bressan, Olivia Frances | SA | Merit | English | |
| 126 | Briglal, Yureesa | SA | Merit | Biology | |
| 127 | Brkic, Alana Ana | SA | Merit | English | |
| 128 | Brooke-Smith, Katharine Sarah | SA | Merit | Biology | |
| 129 | Broomhill, Marley Zubin | SA | Merit | General Mathematics | |
| 130 | Brown, Charlotte | SA | Merit | Research Project B | |
| 131 | Brown, Imogen | SA | Merit | Research Project B | |
| 132 | Bruhn, Charlotte | SA | Merit | General Mathematics | |
| 133 | Bruhn, Charlotte | SA | Merit | Research Project B | |
| 134 | Brzostek, Kate Lilly | SA | Merit | English | |
| 135 | Bueti, Teresa | SA | Merit | Research Project B | |
| 136 | Bui, Emily Minh-An | SA | Merit | Chemistry | |
| 137 | Bui, Emily Minh-An | SA | Merit | Mathematical Methods | |
| 138 | Bun, Emma | SA | Merit | Integrated Learning B | |
| 139 | Burford, Olivia | SA | Merit | General Mathematics | |
| 140 | Burns, Harrison Mark | SA | Merit | English | |
| 141 | Burrough, Myles James Patrick | SA | Merit | Modern History | |
| 142 | Bush, Samuel Cooper | SA | Merit | Industry and Entrepreneurial Solutions | |
| 143 | Butler Pollock, Scott | SA | Merit | Physics | |
| 144 | Button, Matthew Douglas Goold | SA | Merit | English Literary Studies | |
| 145 | Byrne, Alexander Joe | SA | Merit | Music Performance - Solo | |
| 146 | Byun, Thomas Jungwan | SA | Merit | Accounting | |
| 147 | Caceres Galvez, Valeria Lucia | SA | Merit | Spanish (Continuers) | |
| 148 | Callahan, Bridie Claire Steven | SA | Merit | English | |
| 149 | Callea, Jordyn Oriana | SA | Merit | Essential English | |
| 150 | Callea, Jordyn Oriana | SA | Merit | Health and Wellbeing | |