This report lists the winners of Subject Certificate of Excellence awards (formerly Certificate of Distinction awards) in 2023, along with the school that they attended.
These awards are granted by the School Curriculum and Standards Authority to the top 0.5% of students in each tertiary entrance subject based on their examination marks.
Special Subject Certificates of Excellence may be awarded to a student who is ineligible for a Subject Certificate of Excellence but who has otherwise satisfied all other requirements for the award.
| 151 | Literature | Subject Cert of Excellence | Marinko, Tess | Presbyterian Ladies College | Peppermint Grove |
| 152 | Literature | Subject Cert of Excellence | Pather, Sainuja | Perth Modern School | Subiaco |
| 153 | Literature | Subject Cert of Excellence | Shetty, Aman | Christ Church Grammar School | Claremont |
| 154 | Marine and Maritime Studies | Subject Cert of Excellence | Jones, Amy | St Marys Anglican Girls School | Karrinyup |
| 155 | Marine and Maritime Studies | Subject Cert of Excellence | Opie, Annabel | St Marys Anglican Girls School | Karrinyup |
| 156 | Materials Design and Technology | Subject Cert of Excellence | Lester, Ruby | St Hildas Anglican School for Girls | Mosman Park |
| 157 | Materials Design and Technology | Subject Cert of Excellence | Petanceski, Anna-Liis | St Hildas Anglican School for Girls | Mosman Park |
| 158 | Mathematics Applications | Subject Cert of Excellence | Billingham, Charles | Christ Church Grammar School | Claremont |
| 159 | Mathematics Applications | Subject Cert of Excellence | Blake, Lucy | St Marys Anglican Girls School | Karrinyup |
| 160 | Mathematics Applications | Subject Cert of Excellence | Bobey, Dylan | Aquinas College | Salter Point |
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| 161 | Mathematics Applications | Subject Cert of Excellence | Coleman, Joseph | Perth Modern School | Subiaco |
| 162 | Mathematics Applications | Subject Cert of Excellence | Costas, Mia | St Marys Anglican Girls School | Karrinyup |
| 163 | Mathematics Applications | Subject Cert of Excellence | Coulson, Matilda | Bunbury Cathedral Grammar School | Gelorup |
| 164 | Mathematics Applications | Subject Cert of Excellence | George, Amber | Mercedes College | Perth |
| 165 | Mathematics Applications | Subject Cert of Excellence | Gordon, Nicholas | Trinity College | East Perth |
| 166 | Mathematics Applications | Subject Cert of Excellence | Gounder, Dharmini | Penrhos College | Como |
| 167 | Mathematics Applications | Subject Cert of Excellence | Hodgkin, Molly | Perth College | Mount Lawley |
| 168 | Mathematics Applications | Subject Cert of Excellence | Horgan, Noah | Trinity College | East Perth |
| 169 | Mathematics Applications | Subject Cert of Excellence | Hunter, Melanie | Bunbury Senior High School | Bunbury |
| 170 | Mathematics Applications | Subject Cert of Excellence | Keleman, Orlando | Christ Church Grammar School | Claremont |
| 171 | Mathematics Applications | Subject Cert of Excellence | Kho, Ee Jay | Willetton Senior High School | Willetton |
| 172 | Mathematics Applications | Subject Cert of Excellence | Komakech, Janelle | Carey Baptist College | Harrisdale |
| 173 | Mathematics Applications | Subject Cert of Excellence | Lane, Ethan | St Georges Anglican Grammar School | Perth |
| 174 | Mathematics Applications | Subject Cert of Excellence | Lilley, Harry | Comet Bay College | Secret Harbour |
| 175 | Mathematics Applications | Subject Cert of Excellence | Lockwood, Elizabeth | Carey Baptist College | Harrisdale |
| 176 | Mathematics Applications | Subject Cert of Excellence | May, Branson | Trinity College | East Perth |
| 177 | Mathematics Applications | Subject Cert of Excellence | McInnes, Sam | Hale School | Wembley Downs |
| 178 | Mathematics Applications | Subject Cert of Excellence | Pesich, Leila | Kennedy Baptist College | Murdoch |
| 179 | Mathematics Applications | Subject Cert of Excellence | Porter, Ferguson | Kennedy Baptist College | Murdoch |
| 180 | Mathematics Applications | Subject Cert of Excellence | Rafart Millet, Ona | Applecross Senior High School | Ardross |
| 181 | Mathematics Applications | Subject Cert of Excellence | Reuben, Ava | Perth College | Mount Lawley |
| 182 | Mathematics Applications | Subject Cert of Excellence | Roost, Jonathan | Christ Church Grammar School | Claremont |
| 183 | Mathematics Applications | Subject Cert of Excellence | Shaw, Zoe | St Marys Anglican Girls School | Karrinyup |
| 184 | Mathematics Applications | Subject Cert of Excellence | Siney, Charlie | St Mary MacKillop College | West Busselton |
| 185 | Mathematics Applications | Subject Cert of Excellence | Tantry, Saurabh | Melville Senior High School | Melville |
| 186 | Mathematics Applications | Subject Cert of Excellence | Targett, Archibald | Margaret River Senior High School | Margaret River |
| 187 | Mathematics Applications | Subject Cert of Excellence | Taylor, Elli | Margaret River Senior High School | Margaret River |
| 188 | Mathematics Applications | Subject Cert of Excellence | Teakle, Lachlan | Hale School | Wembley Downs |
| 189 | Mathematics Applications | Subject Cert of Excellence | Vijayasekaran, Edward | Christ Church Grammar School | Claremont |
| 190 | Mathematics Applications | Subject Cert of Excellence | Vyner, Sean | Ursula Frayne Catholic College | Victoria Park |
| 191 | Mathematics Applications | Subject Cert of Excellence | Wenham, Tilen | Hale School | Wembley Downs |
| 192 | Mathematics Applications | Subject Cert of Excellence | Wolf, Jessica | Presbyterian Ladies College | Peppermint Grove |
| 193 | Mathematics Applications | Subject Cert of Excellence | Wright, Thomas | Christ Church Grammar School | Claremont |
| 194 | Mathematics Applications | Subject Cert of Excellence | Yeoh, Dylan | Rossmoyne Senior High School | Rossmoyne |
| 195 | Mathematics Methods | Special Subject Cert of Excellence | Khong, Wendy Wenxin | Sunway College | Malaysia |
| 196 | Mathematics Methods | Subject Cert of Excellence | An, Teresa So-Yeon | Willetton Senior High School | Willetton |
| 197 | Mathematics Methods | Subject Cert of Excellence | Chen, Kelly | Rossmoyne Senior High School | Rossmoyne |
| 198 | Mathematics Methods | Subject Cert of Excellence | Cheng, Evan | Hale School | Wembley Downs |
| 199 | Mathematics Methods | Subject Cert of Excellence | Dhawan, Dhruv | Ashdale Secondary College | Darch |
| 200 | Mathematics Methods | Subject Cert of Excellence | Elvadura, Vinura | Perth Modern School | Subiaco |