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.
| 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 | |
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| 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 | |
| 1005 | TEH, Wei Yi | SA | Merit | Nutrition | |
| 1006 | TEH, Wei Yi | SA | Merit | Workplace Practices B | |
| 1007 | TERRY, Dylan | SA | Merit | Workplace Practices | |
| 1008 | TEW, Anthony | SA | Merit | Biology | |
| 1009 | TEW, Anthony | SA | Merit | Chemistry | |
| 1010 | TEW, Anthony | SA | Merit | Physics | |
| 1011 | Thomas, Georgia | Nuriootpa High School | Nuriootpa | Gov of SA SACE Award | |
| 1012 | THOMAS, Jack | SA | Merit | General Mathematics | |
| 1013 | THOMPSON, Amelia | SA | Merit | Visual Arts - Art | |
| 1014 | THOMPSON, Sarah Louise | SA | Merit | English | |
| 1015 | THORNE, Ella | SA | Merit | Research Project B | |
| 1016 | THURSBY, Hillary | SA | Merit | Research Project B | |
| 1017 | TING, Hannah Tze-Jing | SA | Merit | Nutrition | |
| 1018 | TIWARI, Shubham | SA | Merit | Business and Enterprise | |
| 1019 | TIWARI, Sparsh | SA | Merit | Psychology | |
| 1020 | TLAUKA, Elijah | SA | Merit | Research Project B | |
| 1021 | TOLLAND, Molly | SA | Merit | Psychology | |
| 1022 | TOOHEY, Declan Joshua | SA | Merit | Information Technology | |
| 1023 | TOOME, Georgina | SA | Merit | English | |
| 1024 | TOOME, Georgina | SA | Merit | General Mathematics | |