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.
| 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 | |
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| 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 | |
| 1025 | TRAN, Cindy | SA | Merit | Ancient Studies | |
| 1026 | TRAN, Ngoc Thuy Katie | SA | Merit | Vietnamese (Continuers) | |
| 1027 | TRAN, Selina Linh-Thao | SA | Merit | Research Project B | |
| 1028 | TRAVERS, Sophie | SA | Merit | Biology | |
| 1029 | TREGENZA, Amy Louise | SA | Merit | Biology | |
| 1030 | TRIANTAFYLLOS, Leah Mary | SA | Merit | Legal Studies | |
| 1031 | TRINH, Vincent Quoc-Nam | SA | Merit | Biology | |
| 1032 | TRUONG, Wendy | SA | Merit | English | |
| 1033 | TRUONG-DOAN, Sandy | SA | Merit | Information Processing and Publishing | |
| 1034 | TSCHIRPIG, Courtney Brooke | SA | Merit | Visual Arts - Art | |
| 1035 | TSOUKATOS, Maxine | SA | Merit | Information Processing and Publishing | |
| 1036 | TURCZYNOWICZ, Lucy Mcleod | SA | Merit | Visual Arts - Design | |
| 1037 | TURNER, Daniel Stephen | SA | Merit | Mathematical Methods | |
| 1038 | TURNER, Erica Barbara | SA | Merit | Biology | |
| 1039 | Turner, Isaac | Cardijn College Marian Campus | Noarlunga Downs | Gov of SA SACE Award | |
| 1040 | TURNER, Joshua Hamilton | SA | Merit | Accounting | |
| 1041 | Turner, Tobias | Tatachilla Lutheran College | Mclaren Vale | Gov of SA Aboriginal Student SACE Award | |