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.
| 1096 | WATTS, Lucinda Grace | SA | Merit | Biology | |
| 1097 | WATZDORF, Angela Julie | SA | Merit | Economics | |
| 1098 | WATZDORF, Angela Julie | SA | Merit | Psychology | |
| 1099 | WEI, Yaqi | SA | Merit | Biology | |
| 1100 | Wei, Yaqi | Blackwood High School | Eden Hills | Gov of SA SACE Award | |
| 1101 | WELLS, Milla Ursula | SA | Merit | Research Project B | |
| 1102 | WELSBY, George Oscar Sheidow | SA | Merit | Business and Enterprise | |
| 1103 | WELSBY, George Oscar Sheidow | SA | Merit | English | |
| 1104 | WESLEY, Geordie | SA | Merit | Research Project B | |
| 1105 | WHITE, Hamish Timothy | SA | Merit | Research Project B | |
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| 1106 | WHITE, Tulani Michelle | SA | Merit | Nutrition | |
| 1107 | WHITEHEAD, Jasper Tobias | SA | Merit | General Mathematics | |
| 1108 | WHITFORD, Elouise Jane | SA | Merit | Business and Enterprise | |
| 1109 | WHITFORD, Elouise Jane | SA | Merit | Research Project B | |
| 1110 | WHYATT, Natalie Kate | SA | Merit | English | |
| 1111 | WICHMANN, Evangelia Therese | SA | Merit | Integrated Learning A | |
| 1112 | WILLIAMS, Henry Lawrence | SA | Merit | Research Project B | |
| 1113 | WILLIAMS, Joshua Daniel | SA | Merit | General Mathematics | |
| 1114 | WILLIAMS, Madeline Rose | SA | Merit | Research Project B | |
| 1115 | WILLIAMS, Sequoyah | SA | Merit | Information Processing and Publishing | |
| 1116 | WILSON, Alexandra Grace | SA | Merit | Biology | |
| 1117 | WILSON, Laura Caitlin | SA | Merit | Business and Enterprise | |
| 1118 | WILSON, Samuel William Kyffin | SA | Merit | Biology | |
| 1119 | WILSON, Samuel William Kyffin | SA | Merit | Economics | |
| 1120 | WINN, Jessica Judi Anne | SA | Merit | Tourism | |
| 1121 | WIRTH, Jacinta Celeste | SA | Merit | Modern History | |
| 1122 | WISEMAN, Jessica Marie | SA | Merit | Cross-Disciplinary Studies | |
| 1123 | WISEMAN, Jessica Marie | SA | Merit | Health | |
| 1124 | WITKOWSKI, Zoe | SA | Merit | Information Processing and Publishing | |
| 1125 | WOITHE, Laura | SA | Merit | Research Project B | |
| 1126 | WONG, Cheri | SA | Merit | Solo Performance | |
| 1127 | WONG, Clement | SA | Merit | Research Project B | |
| 1128 | WONG, Theng Chun | SA | Merit | Biology | |
| 1129 | WOOLLEY, Maddison Grace | SA | Merit | Research Project B | |
| 1130 | WOOLMAN, Jessica Christina | SA | Merit | Biology | |
| 1131 | WORTHLEY, Thomas Edward Gray | SA | Merit | Research Project B | |
| 1132 | WRIGHT, Eliza | SA | Merit | Research Project B | |
| 1133 | Wright, Eliza | Kingston Community School | Kingston SE | Gov of SA SACE Award | |
| 1134 | WU, Yushan | SA | Merit | Society and Culture | |
| 1135 | WYTHE, Bennett Andrew | SA | Merit | Biology | |
| 1136 | XIONG, Michael | SA | Merit | Physics | |
| 1137 | XIOUROUPPA, Athena Helena | SA | Merit | Biology | |
| 1138 | XIOUROUPPA, Athena Helena | SA | Merit | Mathematical Methods | |
| 1139 | XIOUROUPPA, Athena Helena | SA | Merit | Physics | |
| 1140 | XU, Xinyue | SA | Merit | Chemistry | |
| 1141 | XU, Xinyue | SA | Merit | English as an Additional Language | |
| 1142 | XU, Xinyue | SA | Merit | Physics | |
| 1143 | XU, Xinyue | SA | Merit | Specialist Mathematics | |
| 1144 | YATES, Talia Marie | SA | Merit | Religion Studies | |
| 1145 | YATES, Talia Marie | SA | Merit | Research Project B | |