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.
| 1206 | Walgampola, Asini Induli | SA | Merit | Essential Mathematics | |
| 1207 | Walker, Liana | Salisbury High School | Salisbury North | Gov of SA Aboriginal Student SACE Award | |
| 1208 | Walker, Olivia | SA | Merit | Economics | |
| 1209 | Walker, Olivia | SA | Merit | English Literary Studies | |
| 1210 | Walker, Olivia | Walford Anglican School for Girls | Hyde Park | Gov of SA SACE Award | |
| 1211 | Walker-Hart, Alexandria Mary | SA | Merit | Agricultural Production | |
| 1212 | Wallace, Ewan Neil Verschuer | SA | Merit | English | |
| 1213 | Wallace, Ewan Neil Verschuer | SA | Merit | Mathematical Methods | |
| 1214 | Wallace, Ewan Neil Verschuer | SA | Merit | Physics | |
| 1215 | Wallace, Ewan Neil Verschuer | SA | Merit | Specialist Mathematics | |
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| 1216 | Wallace, Sarah Jane | SA | Merit | English | |
| 1217 | Wallis, Ava | SA | Merit | Information Processing and Publishing | |
| 1218 | Walls, Chelsea | SA | Merit | Food and Hospitality | |
| 1219 | Wallwork, Isabella | SA | Merit | English | |
| 1220 | Wallwork, Isabella | SA | Merit | Physical Education | |
| 1221 | Walsh, Charles Thomas | SA | Merit | Economics | |
| 1222 | Walsh, Charles Thomas | SA | Merit | English | |
| 1223 | Walter, Hugo Charles Sawley | SA | Merit | Biology | |
| 1224 | Walter, Ned Henry Sawley | SA | Merit | Scientific Studies | |
| 1225 | Walton, Steven Bernard | SA | Merit | Material Solutions | |
| 1226 | Wang, Gina | SA | Merit | Chemistry | |
| 1227 | Wang, Gina | SA | Merit | English | |
| 1228 | Wang, Gina | SA | Merit | Physics | |
| 1229 | Ward, Rylan Craig | SA | Merit | Physics | |
| 1230 | Ward, Rylan Craig | SA | Merit | Specialist Mathematics | |
| 1231 | Warrick, Samuel Fraser | SA | Merit | Research Project B | |
| 1232 | Watson, Charlotte Ella Grace | SA | Merit | Material Solutions | |
| 1233 | Watson, Lucy Rose | SA | Merit | Outdoor Education | |
| 1234 | Webb, Olivia Cate | SA | Merit | Mathematical Methods | |
| 1235 | Webb, Peter Alexander | SA | Merit | Research Project B | |
| 1236 | Weber, Grace Anne | SA | Merit | Business and Enterprise | |
| 1237 | Wedd, Chloe Anne | SA | Merit | English | |
| 1238 | Wedd, Chloe Anne | SA | Merit | Research Project B | |
| 1239 | Weetra, Wesley | SA | Merit | English | |
| 1240 | Weetra, Wesley | SA | Merit | Health | |
| 1241 | Weetra, Wesley | Cardijn College Marian Campus | Noarlunga Downs | Gov of SA SACE Award | |
| 1242 | Wehr, Isabella Emily | SA | Merit | Biology | |
| 1243 | Wehr, Isabella Emily | SA | Merit | English | |
| 1244 | Weniton, Ethan | SA | Merit | Digital Technologies | |
| 1245 | Wentrock, Paul | SA | Merit | Material Solutions | |
| 1246 | West, Jordan | SA | Merit | English | |
| 1247 | Westgarth, Ethan Jack | SA | Merit | Material Solutions | |
| 1248 | Westley, Elyse Kate | SA | Merit | Child Studies | |
| 1249 | White, Ethan | SA | Merit | Creative Arts | |
| 1250 | White, Ethan | SA | Merit | Integrated Learning B | |
| 1251 | White, Luka | SA | Merit | Religion Studies | |
| 1252 | White, Luka | SA | Merit | Research Project A | |
| 1253 | Whitmore, Mason | SA | Merit | Robotic and Electronic Systems | |
| 1254 | Whitmore, Mason | SA | Merit | Visual Arts - Design | |
| 1255 | Wiadrowski, Gisele | SA | Merit | Physical Education | |