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.
| 971 | Roberts, Tayla | Streaky Bay Area School | Streaky Bay | Gov of SA SACE Award | |
| 972 | Roberts, Tayla Erin | SA | Merit | Outdoor Education | |
| 973 | Roche, Caoimhe | SA | Merit | Essential Mathematics | |
| 974 | Rodger, Phoebe | SA | Merit | Modern History | |
| 975 | Rodgers, Poppy | SA | Merit | Research Project B | |
| 976 | Rogers, Cooper | SA | Merit | Health and Wellbeing | |
| 977 | Rollins, Tahnique Aimee | SA | Merit | Health and Wellbeing | |
| 978 | Romaniuk, Annelise | SA | Merit | Research Project B | |
| 979 | Romaniuk, Clare | SA | Merit | Workplace Practices | |
| 980 | Romeo, Lia | SA | Merit | Child Studies | |
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| 981 | Romeo, Lia | SA | Merit | Religion Studies | |
| 982 | Romeo, Lia | SA | Merit | Research Project B | |
| 983 | Ross, Ella Faith | SA | Merit | Outdoor Education | |
| 984 | Ross, Harper | SA | Merit | Society and Culture | |
| 985 | Ross, Kiera Mae | SA | Merit | Research Project B | |
| 986 | Rouski, Hannah | SA | Merit | Essential Mathematics | |
| 987 | Rouvray, Airlie June | SA | Merit | Research Project B | |
| 988 | Rouvray, Cameron Lea | SA | Merit | Research Project A | |
| 989 | Rowley, Kayla | SA | Merit | English | |
| 990 | Ruciak, Ella | SA | Merit | English | |
| 991 | Ryan, Angus Edward | SA | Merit | Outdoor Education | |
| 992 | Ryan, Kenadee | SA | Merit | English | |
| 993 | Saba, Isabella Umberta | SA | Merit | Visual Arts - Art | |
| 994 | Saeed, Reem | SA | Merit | Biology | |
| 995 | Saeed, Reem | SA | Merit | General Mathematics | |
| 996 | Sammon, Elliot Anthony | SA | Merit | English | |
| 997 | Sanders, Jemma Louise | SA | Merit | Creative Arts | |
| 998 | Sandery, Charlie Rose Mulholland | SA | Merit | Outdoor Education | |
| 999 | Sandhu, Nirbhik Singh | SA | Merit | General Mathematics | |
| 1000 | Sandhu, Nirbhik Singh | SA | Merit | Integrated Learning B | |
| 1001 | Sandhu, Nirbhik Singh | SA | Merit | Workplace Practices | |
| 1002 | Sandow, Eloise | SA | Merit | Nutrition | |
| 1003 | Sangson, Nattanicha Catherine | SA | Merit | Workplace Practices | |
| 1004 | Santosh Olakkengil, Kate | SA | Merit | Essential Mathematics | |
| 1005 | Santosh Olakkengil, Kate | SA | Merit | Psychology | |
| 1006 | Sarah, Alistair Henry | SA | Merit | Business Innovation | |
| 1007 | Sarah, Alistair Henry | SA | Merit | Legal Studies | |
| 1008 | Satanek, Cain | SA | Merit | Research Project B | |
| 1009 | Savas, Anne-Marie | SA | Merit | Politics, Power and People | |
| 1010 | Savas, Anne-Marie | SA | Merit | Research Project B | |
| 1011 | Sawers, Hope Alice Vuyo Penn | SA | Merit | Modern History | |
| 1012 | Scalzi, Nicola | SA | Merit | Research Project B | |
| 1013 | Scassa, Luca | SA | Merit | Food and Hospitality | |
| 1014 | Scheepers, Georgia | SA | Merit | English | |
| 1015 | Schubert, Ryan Steven | SA | Merit | Material Solutions | |
| 1016 | Schutz, Holly | Pedare Christian College | Golden Grove | Gov of SA SACE Award | |
| 1017 | Schwartz, Caleb Benjamin | SA | Merit | Agricultural Systems | |
| 1018 | Scriver, Stefanie Katherine Boyd | SA | Merit | Philosophy | |
| 1019 | Scroop, Lucas | SA | Merit | Chemistry | |
| 1020 | Scroop, Lucas | SA | Merit | English Literary Studies | |