This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2018, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 955 | SREDOJEVIC, Alex | SA | Merit | Research Project B | |
| 956 | SRITHAR, Niranjan | SA | Merit | Integrated Learning A | |
| 957 | STALLAN, Caitlin Marie | SA | Merit | Workplace Practices | |
| 958 | STANBURY, Mia Jane | SA | Merit | English | |
| 959 | STARBUCK, James Robert | SA | Merit | English | |
| 960 | STEFANIDIS, Eugenia Jennifer | SA | Merit | English Literary Studies | |
| 961 | STEINMANN, Daniela | SA | Merit | Psychology | |
| 962 | STENCHLIK, Sebastian | SA | Merit | Integrated Learning A | |
| 963 | STEPHENS, Madison | SA | Merit | Modern History | |
| 964 | STEPHENSON, Adelia Jordyn | SA | Merit | Research Project B | |
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| 965 | STEPHENSON, Alexandra Claire | SA | Merit | Research Project B | |
| 966 | STEWART, Harrison | SA | Merit | Research Project B | |
| 967 | STRUNK, Harrison James | SA | Merit | English | |
| 968 | STRUNK, Harrison James | SA | Merit | General Mathematics | |
| 969 | STUART, Benjamin Thomas | SA | Merit | Material Products II | |
| 970 | SUBRAMANIAM, Samuel George Thuraisingam | SA | Merit | Research Project B | |
| 971 | SUKHEJA, Mansa | SA | Merit | Biology | |
| 972 | SUKHEJA, Mansa | SA | Merit | Chemistry | |
| 973 | SUKHEJA, Mansa | SA | Merit | Psychology | |
| 974 | SUKHIJA, Rajat | SA | Merit | Chemistry | |
| 975 | SUKHIJA, Rajat | SA | Merit | English | |
| 976 | SUMNER, Thomas James | SA | Merit | Material Products II | |
| 977 | SUN, Wonbin | SA | Merit | Mathematical Methods | |
| 978 | SUN, Wonbin | SA | Merit | Specialist Mathematics | |
| 979 | SURESH, Gokul Krishna | SA | Merit | Research Project B | |
| 980 | SYRIANOS, Caroline | SA | Merit | Health | |
| 981 | SYRIANOS, Caroline | SA | Merit | Workplace Practices | |
| 982 | Szabo, Sophie | Pedare Christian College | Golden Grove | Prize: Alliance Francaise d'Adelaide Prize | French |
| 983 | Szabo, Sophie | Pedare Christian College | Golden Grove | Prize: Annie Montgomerie Martin Prize and Medal for French | French |
| 984 | SZABO, Sophie Madeline | SA | Merit | Chemistry | |
| 985 | SZABO, Sophie Madeline | SA | Merit | French (Continuers) | |
| 986 | SZABO, Sophie Madeline | SA | Merit | Mathematical Methods | |
| 987 | SZABO, Sophie Madeline | SA | Merit | Religion Studies | |
| 988 | TAING, Tristan | SA | Merit | Research Project B | |
| 989 | TAIRLI, Alina | SA | Merit | Russian (Continuers) | |
| 990 | TAIT, Sophie Marie | SA | Merit | Psychology | |
| 991 | TAN, Judah Salem | SA | Merit | Geography | |
| 992 | TAN, Judah Salem | SA | Merit | Mathematical Methods | |
| 993 | TAN, Judah Salem | SA | Merit | Physics | |
| 994 | TAN, Judah Salem | SA | Merit | Research Project B | |
| 995 | TAN, Yoshi | SA | Merit | Research Project B | |
| 996 | TAPLIN, Thomas Owen | SA | Merit | Outdoor Education | |
| 997 | TAPLIN, Thomas Owen | SA | Merit | Research Project B | |
| 998 | TARAKJI, Sirage | SA | Merit | General Mathematics | |
| 999 | TATARELLI, Jake | SA | Merit | Mathematical Methods | |
| 1000 | TATARELLI, Jake | SA | Merit | Physics | |
| 1001 | TAYLOR, Joseph Thomson | SA | Merit | Scientific Studies | |
| 1002 | TAYLOR, Mitchell | SA | Merit | Research Project B | |
| 1003 | TAYLOR, Thomas James | SA | Merit | Communication Products II | |
| 1004 | TCHORBADJIEV, Radee Stefanov | SA | Merit | Physics | |