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.
| 963 | Rice, Harrison Finlay | SA | Merit | Research Project B | |
| 964 | Riches, Kaylee | SA | Merit | Workplace Practices | |
| 965 | Rimington, Hugo Dean | SA | Merit | Research Project B | |
| 966 | Rizwan, Abdullah | SA | Merit | Biology | |
| 967 | Rizwan, Abdullah | SA | Merit | Chemistry | |
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| 968 | Roberts, Emily | SA | Merit | English | |
| 969 | Roberts, Emily | SA | Merit | Research Project B | |
| 970 | Roberts, Emily | SA | Merit | Society and Culture | |
| 971 | Roberts, Linden Hyacinthus Morgan | SA | Merit | Information Processing and Publishing | |
| 972 | Robinson, Paris | SA | Merit | Business Innovation | |
| 973 | Robinson, Paris | SA | Merit | Drama | |
| 974 | Robinson, Prudence Georgina | SA | Merit | English | |
| 975 | Robinson, Talia | SA | Merit | Chemistry | |
| 976 | Robinson, Talia | SA | Merit | Physics | |
| 977 | Robson, Thomas | SA | Merit | Business Innovation | |
| 978 | Rodrigues, Timothy Louis | SA | Merit | Biology | |
| 979 | Rogers, Manuela Leia | SA | Merit | Biology | |
| 980 | Romaniuk, Annelise | SA | Merit | Food and Hospitality | |
| 981 | Roos, Madeline | SA | Merit | English | |
| 982 | Roos, Madeline | SA | Merit | Geography | |
| 983 | Rose, Claire | SA | Merit | Material Solutions | |
| 984 | Rositano, Laura May | SA | Merit | English | |
| 985 | Rositano, Laura May | SA | Merit | Physical Education | |
| 986 | Ross, Aidan Alexander | SA | Merit | Research Project B | |
| 987 | Rosser, Richard Brian | SA | Merit | English | |