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.
| 932 | Raftopoulos, Georgia Kate | SA | Merit | Music Explorations | |
| 933 | Raftopoulos, Georgia Kate | SA | Merit | Music Performance - Solo | |
| 934 | Rahimi, Hasina | SA | Merit | Scientific Studies | |
| 935 | Rajapaksha, Dilan Anuradha | SA | Merit | Biology | |
| 936 | Rajapaksha, Dilan Anuradha | SA | Merit | Chemistry | |
| 937 | Rakocevic, Damien | SA | Merit | English | |
| 938 | Ralph, Gemma Hope | SA | Merit | General Mathematics | |
| 939 | Ramsay, Kelly Ann | SA | Merit | General Mathematics | |
| 940 | Ransom, Joel | St Johns Grammar School | Belair | Gov of SA SACE Award | |
| 941 | Rao, Anushka | SA | Merit | English | |
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| 942 | Rapuano, Sebastian | SA | Merit | English | |
| 943 | Rapuano, Sebastian | SA | Merit | General Mathematics | |
| 944 | Rapuano, Sebastian | SA | Merit | Research Project B | |
| 945 | Rault, Amelia | SA | Merit | Research Project B | |
| 946 | Ravindra, Neha | SA | Merit | Research Project B | |
| 947 | Ravindran, Sachin | SA | Merit | Chemistry | |
| 948 | Ravindran, Sachin | SA | Merit | Mathematical Methods | |
| 949 | Ravindran, Sachin | SA | Merit | Physics | |
| 950 | Ravindran, Sachin | SA | Merit | Specialist Mathematics | |
| 951 | Raw, Jonathan Samuel | SA | Merit | Research Project B | |
| 952 | Rawlins, Sienna | SA | Merit | Business Innovation | |
| 953 | Rawlins, Sienna | SA | Merit | Child Studies | |
| 954 | Rawlins, Sienna | SA | Merit | Research Project B | |
| 955 | Rees, Marney Victoria | SA | Merit | Mathematical Methods | |
| 956 | Rees, Marney Victoria | SA | Merit | Specialist Mathematics | |
| 957 | Reid, Emma | SA | Merit | Research Project B | |
| 958 | Reimann, Billie Jay | SA | Merit | Research Project B | |
| 959 | Reimers, Kyan | SA | Merit | Mathematical Methods | |
| 960 | Rendell, Isabella Grace | SA | Merit | English | |
| 961 | Reuther, Georgie | SA | Merit | Business Innovation | |
| 962 | Reuther, Georgie | SA | Merit | General Mathematics | |
| 963 | Reuther, Georgie | SA | Merit | Information Processing and Publishing | |
| 964 | Rezaee, Soraya | SA | Merit | Business Innovation | |
| 965 | Ricks, Vanessa Jane | SA | Merit | Research Project B | |
| 966 | Rieck, Sterling James | SA | Merit | Music Performance - Solo | |
| 967 | Rizwan, Abdullah | SA | Merit | Mathematical Methods | |
| 968 | Roberts, Freya | SA | Merit | Visual Arts - Design | |
| 969 | Roberts, Isabel Jane | SA | Merit | Physical Education | |
| 970 | Roberts, Isabel Jane | SA | Merit | Research Project B | |
| 971 | Roberts, Tabitha | SA | Merit | Material Solutions | |
| 972 | Roberts, Tayla | Streaky Bay Area School | Streaky Bay | Gov of SA SACE Award | |
| 973 | Roberts, Tayla Erin | SA | Merit | Outdoor Education | |
| 974 | Roche, Caoimhe | SA | Merit | Essential Mathematics | |
| 975 | Rodger, Phoebe | SA | Merit | Modern History | |
| 976 | Rodgers, Poppy | SA | Merit | Research Project B | |
| 977 | Rogers, Cooper | SA | Merit | Health and Wellbeing | |
| 978 | Rollins, Tahnique Aimee | SA | Merit | Health and Wellbeing | |
| 979 | Romaniuk, Annelise | SA | Merit | Research Project B | |
| 980 | Romaniuk, Clare | SA | Merit | Workplace Practices | |
| 981 | Romeo, Lia | SA | Merit | Child Studies | |