This report lists the winners of Certificates of Distinction and Certificates of Merit for 2021, along with the school that they attended.
These certificates are awarded to students who achieve at least 150 points (Certificate of Merit) or 190 points (Certificate of Distinction) across 20 year 11 and year 12 course units or equivalents, of which 10 are at year 12 level.
Formerly these awards were named Certificates of Commendation (2012-2015) or Certificates of Excellence (prior to 2012), and were based on achievements of at least 20 'A' grades in course units or equivalents.
| 1 | Cert of Distinction | Abbott, Karina | St Marks Anglican Community School | Hillarys |
| 2 | Cert of Distinction | Abercrombie-Higgins, Bianca | Kingsway Christian College | Darch |
| 3 | Cert of Distinction | ABITBOL, Charlie | Carmel School | Dianella |
| 4 | Cert of Distinction | Adams, Caleb | Perth Modern School | Subiaco |
| 5 | Cert of Distinction | Adamson, Rose | Geraldton Grammar School | Geraldton |
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| 6 | Cert of Distinction | Adma Weda, Neisha | Peter Moyes Anglican Community School | Quinns Rocks |
| 7 | Cert of Distinction | Alcock, Jade | Perth Modern School | Subiaco |
| 8 | Cert of Distinction | Alivio, Jamie | Kingsway Christian College | Darch |
| 9 | Cert of Distinction | Allan, Jim | Scotch College | Claremont |
| 10 | Cert of Distinction | Allen, Amalia | St Hildas Anglican School for Girls | Mosman Park |
| 11 | Cert of Distinction | Allen, Eloise | Mount Lawley Senior High School | Mount Lawley |
| 12 | Cert of Distinction | Alpers, Zachary | Melville Senior High School | Melville |
| 13 | Cert of Distinction | Althorpe, Kate | Methodist Ladies College | Claremont |
| 14 | Cert of Distinction | Alwis Wijesiri Gunawardhana, Nisani | Perth Modern School | Subiaco |
| 15 | Cert of Distinction | Amaria, Cyrus | Rossmoyne Senior High School | Rossmoyne |
| 16 | Cert of Distinction | Amedi, Mitahn | Hale School | Wembley Downs |
| 17 | Cert of Distinction | Amran, Aimi | Churchlands Senior High School | Churchlands |
| 18 | Cert of Distinction | Anderson, Tara | Bunbury Cathedral Grammar School | Bunbury |
| 19 | Cert of Distinction | Anderson-Prentice, India | Mount Lawley Senior High School | Mount Lawley |
| 20 | Cert of Distinction | Andonov, Stefan | Mercy College | Mirrabooka |
| 21 | Cert of Distinction | Andrews, Brodie | Churchlands Senior High School | Churchlands |
| 22 | Cert of Distinction | Anfuso, Isaac | Hale School | Wembley Downs |
| 23 | Cert of Distinction | Angusamy, Shakthi Nimala | Rossmoyne Senior High School | Rossmoyne |
| 24 | Cert of Distinction | Anthony, Mercy | Emmanuel Christian Community School | Girrawheen |
| 25 | Cert of Distinction | Aquino, Marc Luis | St Mary MacKillop College | West Busselton |