This report shows the 2021 top students in each HSC subject, along with their ranking as assigned by the NSW Education Standards Authority.
Rankings are calculated from student HSC marks in the subject, or, where this results in a tie, from the average of the students' examination and assessment marks.
Students must achieve a band 6 or band E4 result in the relevant subject to appear in this list.
The number of top achievers reported varies from 5 to 20, according to the number of candidates taking each subject.
| 751 | Physics | Ryoo, Ethan Jaemin | 7 | Knox Grammar School | Wahroonga |
| 752 | Physics | Xu, Derek | 7 | Sydney Grammar School | Darlinghurst |
| 753 | Physics | Yan, Yijun | 11 | Killarney Heights High School | Killarney Heights |
| 754 | Polish Continuers | Konczyk, Marcin | 1 | Secondary College of Languages Ashfield Boys Campus | Ashfield |
| 755 | Polish Continuers | Mrowka, Zofia | 2 | Secondary College of Languages Chatswood Campus | Chatswood |
| 756 | Polish Continuers | Zwolak, Amelia | 3 | Secondary College of Languages Liverpool Girls Campus | Liverpool |
| 757 | Polish Continuers | Gandera, Natalia | 4 | Secondary College of Languages Chatswood Campus | Chatswood |
| 758 | Polish Continuers | Jasinska, Nelly | 5 | Secondary College of Languages Ashfield Boys Campus | Ashfield |
| 759 | Portuguese Continuers | Brambilla Vieira, Isabella | 1 | Secondary College of Languages Petersham Campus | Petersham |
| 760 | Portuguese Continuers | Vicente, Mariana | 2 | Secondary College of Languages Petersham Campus | Petersham |
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| 761 | Portuguese Continuers | Bernardo Costa Silva, Corcino | 3 | Secondary College of Languages Petersham Campus | Petersham |
| 762 | Portuguese Continuers | Sampaio Little, Paula | 4 | NSW School of Languages | Petersham |
| 763 | Portuguese Continuers | Kulikovsky, Daniel | 5 | NSW School of Languages | Petersham |
| 764 | Portuguese Continuers | Vander Heiden, Anamieka | 5 | NSW School of Languages | Petersham |
| 765 | Primary Industries Examination | Watson, Emma | 1 | St Columbas Catholic College | Springwood |
| 766 | Primary Industries Examination | Buttress, Daisy Lily | 2 | Muirfield High School | North Rocks |
| 767 | Primary Industries Examination | Burke, Isabelle | 3 | Calrossy Anglican School | Tamworth |
| 768 | Primary Industries Examination | Bradfield, Sarah | 4 | Calrossy Anglican School | Tamworth |
| 769 | Primary Industries Examination | Allen, Bryony | 5 | Wee Waa High School | Wee Waa |
| 770 | Primary Industries Examination | Bangert, Elliot | 5 | Orange Christian School | Orange |
| 771 | Primary Industries Examination | Jones, Abbey | 5 | Tenterfield High School | Tenterfield |
| 772 | Primary Industries Examination | Terblanche - Braack, Michelle | 5 | Menai High School | Menai |
| 773 | Punjabi Continuers | Gangwani, Lovisha | 1 | Secondary College of Languages The Hills Sports Campus | Seven Hills |
| 774 | Punjabi Continuers | Singh, Harkirat | 1 | Secondary College of Languages The Hills Sports Campus | Seven Hills |
| 775 | Punjabi Continuers | Singh, Iccha | 3 | Secondary College of Languages The Hills Sports Campus | Seven Hills |
| 776 | Punjabi Continuers | Kaur, Komalpreet | 4 | Secondary College of Languages The Hills Sports Campus | Seven Hills |
| 777 | Punjabi Continuers | Bhangu, Jaismine Kaur | 5 | Secondary College of Languages The Hills Sports Campus | Seven Hills |
| 778 | Punjabi Continuers | Dhillon, Iman Singh | 5 | Secondary College of Languages The Hills Sports Campus | Seven Hills |
| 779 | Punjabi Continuers | Thind, Ravjot Singh | 5 | Secondary College of Languages The Hills Sports Campus | Seven Hills |
| 780 | Retail Services Examination | Baker, Caleb | 1 | St Pauls Catholic College Booragul | Booragul |
| 781 | Retail Services Examination | Chandrashekhar, Shraddha | 2 | Hornsby Girls High School | Hornsby |
| 782 | Retail Services Examination | Crimston, Indiana | 2 | Francis Greenway High School | Woodberry |
| 783 | Retail Services Examination | Marquet, Hannah Kate | 2 | Dungog High School | Dungog |
| 784 | Retail Services Examination | Huynh, Jason | 5 | Canley Vale High School | Canley Vale |
| 785 | Retail Services Examination | Leung, Ka Wing Christy | 5 | Willoughby Girls High School | Willoughby |
| 786 | Russian Continuers | Strakhova, Yana | 1 | NSW School of Languages | Petersham |
| 787 | Russian Continuers | Maximova, Eva | 2 | NSW School of Languages | Petersham |
| 788 | Russian Continuers | Skripnikova, Mariya | 3 | NSW School of Languages | Petersham |
| 789 | Russian Continuers | Kytikova, Elza | 4 | NSW School of Languages | Petersham |
| 790 | Russian Continuers | Strelnikova, Iuliia | 4 | NSW School of Languages | Petersham |
| 791 | Science Extension | Burton, Ian | 1 | Xavier High School | North Albury |
| 792 | Science Extension | Sullivan, Zoe | 2 | St Catherines School | Waverley |
| 793 | Science Extension | Kluck, Bridget | 3 | St Catherines School | Waverley |
| 794 | Science Extension | Tobin, Lachlan Enja | 3 | Carlingford High School | Carlingford |
| 795 | Science Extension | Abbott, Thomas | 5 | Barker College | Hornsby |
| 796 | Serbian Continuers | Popovic, Anika | 1 | Secondary College of Languages Liverpool Girls Campus | Liverpool |
| 797 | Serbian Continuers | Trazivuk, Andjela | 2 | Secondary College of Languages Liverpool Girls Campus | Liverpool |
| 798 | Serbian Continuers | Vujanic, Sonja | 3 | Secondary College of Languages Liverpool Girls Campus | Liverpool |
| 799 | Serbian Continuers | Kozul, Sava | 4 | Secondary College of Languages Liverpool Girls Campus | Liverpool |
| 800 | Serbian Continuers | Milivojcevic, Tara | 4 | Secondary College of Languages Liverpool Girls Campus | Liverpool |