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.
| 1091 | South, Jordan Mitchel | SA | Merit | Research Project B | |
| 1092 | Speake, Kira Lyn | SA | Merit | Research Project B | |
| 1093 | Speranza, Natalie | SA | Merit | Research Project B | |
| 1094 | Stafford, Nathan | SA | Merit | Dance | |
| 1095 | Stafford, Nathan | SA | Merit | Music Performance - Solo | |
| 1096 | Standley-Grace, Georgia Lee | SA | Merit | Outdoor Education | |
| 1097 | Stattin, Amber | SA | Merit | Integrated Learning A | |
| 1098 | Stattmann, Lucy Karen | SA | Merit | Business Innovation | |
| 1099 | Steer, Chelsea Ruby | SA | Merit | Physical Education | |
| 1100 | Stefanopoulos, Paras | SA | Merit | Chemistry | |
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| 1101 | Stefanopoulos, Paras | SA | Merit | Mathematical Methods | |
| 1102 | Stefanopoulos, Paras | SA | Merit | Physics | |
| 1103 | Stefanopoulos, Paras | SA | Merit | Research Project B | |
| 1104 | Stefanopoulos, Paras | SA | Merit | Specialist Mathematics | |
| 1105 | Stefanopoulos, Paras | St Michaels College | Henley Beach | Gov of SA SACE Award | |
| 1106 | Stephens, Lewis | SA | Merit | General Mathematics | |
| 1107 | Stephenson, Ellie | SA | Merit | English | |
| 1108 | Stevens, Lucy | SA | Merit | English | |
| 1109 | Stevenson, Savannah-Leigh | SA | Merit | Chemistry | |
| 1110 | Stevenson, Savannah-Leigh | SA | Merit | English | |
| 1111 | Stevenson, Savannah-Leigh | SA | Merit | Research Project B | |
| 1112 | Stopford, Zoe | SA | Merit | Food and Hospitality | |
| 1113 | Strangio, Domenic | SA | Merit | Integrated Learning A | |
| 1114 | Strangio, Domenic | SA | Merit | Psychology | |
| 1115 | Stretton, Jasmine | SA | Merit | Health | |
| 1116 | Su, Kevin Nianchu | SA | Merit | Mathematical Methods | |
| 1117 | Sudhir, Anushka | SA | Merit | Business Innovation | |
| 1118 | Sultan, Mahala | SA | Merit | Communication and the Community | |
| 1119 | Sutton, David | Xavier College Gawler Belt Campus | Gawler Belt | Gov of SA SACE Award | |
| 1120 | Suy, Cindy Huy Meang | SA | Merit | Creative Arts | |
| 1121 | Swain, Jeremy Allan | SA | Merit | Physics | |
| 1122 | Swiatczak, Karoline | SA | Merit | English | |
| 1123 | Swiatczak, Karoline | SA | Merit | Psychology | |
| 1124 | Syed, Fatin Mehdi | SA | Merit | Biology | |
| 1125 | Symeonakis, Tiana Jayne | SA | Merit | Child Studies | |
| 1126 | Taeger, Georgina | SA | Merit | Health | |
| 1127 | Taeger, Georgina | SA | Merit | Music Performance - Solo | |
| 1128 | Tahabub, Tasnuva | SA | Merit | Research Project B | |
| 1129 | Tallent, Olivia Emily | SA | Merit | Ancient Studies | |
| 1130 | Tan, Darrell Karhoe | SA | Merit | Mathematical Methods | |
| 1131 | Tang, Hannah | SA | Merit | Research Project B | |
| 1132 | Tape, Mackenzie Jackson | SA | Merit | Industry and Entrepreneurial Solutions | |
| 1133 | Taplin, Grace Alexandra | SA | Merit | Business and Enterprise | |
| 1134 | Telford-Sharp, Liam | SA | Merit | Modern History | |
| 1135 | Terrington, Breanna | SA | Merit | Biology | |
| 1136 | Terrington, Breanna | SA | Merit | Chemistry | |
| 1137 | Terrington, Breanna | SA | Merit | Mathematical Methods | |
| 1138 | Thach, Thi My Sieu (Michelle) | SA | Merit | Psychology | |
| 1139 | Thai, Jessica | SA | Merit | English | |
| 1140 | Thavarajah, Preshaan | SA | Merit | Physics | |