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.
| 301 | English Extension 2 | Luchko, Isabella | 5 | Regents Park Christian School | Regents Park |
| 302 | English Extension 2 | Knight, Maggie | 6 | Hornsby Girls High School | Hornsby |
| 303 | English Extension 2 | Zafiropoulos, Antony | 7 | Trinity Grammar School | Summer Hill |
| 304 | English Extension 2 | Maher, Luke | 8 | Great Lakes College Tuncurry Senior Campus | Tuncurry |
| 305 | English Extension 2 | Droga, Emil | 9 | Cranbrook School | Bellevue Hill |
| 306 | English Extension 2 | Smart, Maddison | 10 | St Lukes Grammar School | Dee Why |
| 307 | English Standard | Pellegrini, Scarlett | 1 | St Catherines School | Waverley |
| 308 | English Standard | Ersamuk, Selin | 2 | Salamah College | Chester Hill |
| 309 | English Standard | Huynh, Jayden | 3 | Randwick Boys High School | Randwick |
| 310 | English Standard | Mohanarajah, Dineshe | 4 | Girraween High School | Girraween |
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| 311 | English Standard | Barghachoun, Aya | 5 | Al Noori Muslim School Senior Campus | Greenacre |
| 312 | English Standard | Hijazi, Nadia | 6 | Salamah College | Chester Hill |
| 313 | English Standard | Muspah, Fatma | 6 | Salamah College | Chester Hill |
| 314 | English Standard | Pattinson, Damien | 6 | John Therry Catholic College | Rosemeadow |
| 315 | English Standard | Metleg, Annam | 9 | Al Noori Muslim School Senior Campus | Greenacre |
| 316 | English Standard | Ahn, Rebecca | 10 | Tuggerah Lakes Secondary College The Entrance Campus | Shelly Beach |
| 317 | English Standard | Giles, Shannon | 10 | Marcellin College | Randwick |
| 318 | English Standard | Katz, Sage | 10 | Moriah College | Queens Park |
| 319 | English Standard | O'Malley, Jamai | 13 | Xavier Catholic College Ballina | Skennars Head |
| 320 | English Standard | Yaneza, Emilyn | 14 | Doonside High School | Doonside |
| 321 | English Standard | Elmasri, Gabriel | 15 | Salamah College | Chester Hill |
| 322 | English Standard | Kayani, Abdullah | 16 | Alpha Omega Senior College | Auburn |
| 323 | English Standard | Kapila, Mohit | 17 | South Western Sydney Institute Liverpool Campus | Liverpool |
| 324 | English Standard | Camilleri, Alana | 18 | Freeman Catholic College | Bonnyrigg Heights |
| 325 | English Standard | Abdel-Qader, Dana | 19 | Alpha Omega Senior College | Auburn |
| 326 | English Standard | Mercieca, April | 20 | Doonside High School | Doonside |
| 327 | Entertainment Industry Examination | Herington, Damon James | 1 | St Philips Christian College Newcastle | Waratah |
| 328 | Entertainment Industry Examination | Wooding, Noah | 2 | St Philips Christian College Newcastle | Waratah |
| 329 | Entertainment Industry Examination | Mulholland, Tara Sabine | 3 | MLC School | Burwood |
| 330 | Entertainment Industry Examination | Cameron-Brown, Anderson | 4 | St Columba Anglican School | Port Macquarie |
| 331 | Entertainment Industry Examination | Collier, Louise | 5 | Engadine High School | Engadine |
| 332 | Entertainment Industry Examination | Stokan, Cassandra Ann | 5 | Castle Hill High School | Castle Hill |
| 333 | Filipino Continuers | Marcos, Princess | 1 | Secondary College of Languages Bankstown Girls Campus | Bankstown |
| 334 | Filipino Continuers | Wenceslao, Kristina | 2 | Secondary College of Languages Bankstown Girls Campus | Bankstown |
| 335 | Financial Services Examination | Davis, Jarrod | 1 | OneSchool Global NSW Sydney | Oatlands |
| 336 | Financial Services Examination | Shoobridge, Emma | 2 | TAFE Digital | Ultimo |
| 337 | Financial Services Examination | Toogood, Alexandra | 3 | TAFE Digital | Ultimo |
| 338 | Financial Services Examination | Larsen, Kurtis | 4 | OneSchool Global NSW Sydney | Oatlands |
| 339 | Financial Services Examination | Slack, Oceana | 4 | OneSchool Global NSW Sydney | Oatlands |
| 340 | Food Technology | Di Bello, Serenna | 1 | Pymble Ladies College | Pymble |
| 341 | Food Technology | Rodgers, Skye | 1 | Presbyterian Ladies College Sydney | Croydon |
| 342 | Food Technology | Vogel, Emma | 1 | Roseville College | Roseville |
| 343 | Food Technology | Appleby, Cooper | 4 | Georges River College Oatley Senior Campus | Oatley |
| 344 | Food Technology | Torrillo, Julian | 4 | Inaburra School | Bangor |
| 345 | Food Technology | Stefani, Helena Anastasia | 6 | Meriden School | Strathfield |
| 346 | Food Technology | Nguyen, Jesse To Binh | 7 | Meriden School | Strathfield |
| 347 | Food Technology | Brady, Claudia | 8 | Northern Beaches Secondary College Freshwater Campus | Freshwater |
| 348 | Food Technology | Tuddenham, Ella | 9 | Roseville College | Roseville |
| 349 | Food Technology | Papageorgiou, Evelyn Jasmine | 10 | Meriden School | Strathfield |
| 350 | French Beginners | Briganti, Therese | 1 | International Grammar School | Ultimo |