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.
| 251 | Engineering Studies | Pettett, Patrick Matthew | 7 | Merewether High School | Broadmeadow |
| 252 | Engineering Studies | Beetham, Lochlan | 8 | Sydney Technical High School | Bexley |
| 253 | Engineering Studies | Gardner, Brice | 9 | Northern Beaches Christian School | Terrey Hills |
| 254 | Engineering Studies | James, Cameron | 10 | Woolooware High School | Woolooware |
| 255 | Engineering Studies | Lee, Ryan | 10 | Sydney Boys High School | Moore Park |
| 256 | Engineering Studies | Lynch, Sam | 10 | All Saints College St Marys Campus | Maitland |
| 257 | English Advanced | Coughlan, Billie | 1 | St Catherines School | Waverley |
| 258 | English Advanced | Halliday Shand, Rachel | 1 | Ravenswood School for Girls | Gordon |
| 259 | English Advanced | Ung, Michelle | 1 | Prairiewood High School | Prairiewood |
| 260 | English Advanced | Wen, Rita | 4 | Roseville College | Roseville |
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| 261 | English Advanced | Paton, Mayling Natalie Vera | 5 | Kambala | Rose Bay |
| 262 | English Advanced | Clubb, Harrison John | 6 | St Ignatius College | Lane Cove |
| 263 | English Advanced | Gupta, Arnav | 7 | Macarthur Anglican School | Cobbitty |
| 264 | English Advanced | Graham, Rory | 8 | St Augustines College | Brookvale |
| 265 | English Advanced | Bittar, Nicholas Garth | 9 | The Kings School | North Parramatta |
| 266 | English Advanced | McGrath, Kashia | 10 | MacKillop College Port Macquarie | Port Macquarie |
| 267 | English Advanced | Raffoul, Jacob | 10 | Redfield College | Dural |
| 268 | English Advanced | Rogers, Imogen | 10 | Penrith Christian School | Orchard Hills |
| 269 | English Advanced | Zhao, O'felia | 13 | Castle Hill High School | Castle Hill |
| 270 | English Advanced | Hong, James Joo | 14 | The Kings School | North Parramatta |
| 271 | English Advanced | Ma, Max | 14 | The Kings School | North Parramatta |
| 272 | English Advanced | Finlayson, Lara Louise | 16 | Kambala | Rose Bay |
| 273 | English Advanced | Le, Angela | 17 | Prairiewood High School | Prairiewood |
| 274 | English Advanced | Taghvaei, Ryan | 17 | Prairiewood High School | Prairiewood |
| 275 | English Advanced | Cook, Harriet Rose | 19 | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse |
| 276 | English Advanced | Ho, Samantha | 19 | James Ruse Agricultural High School | Carlingford |
| 277 | English EAL/D | Zheng, Minxi | 1 | Meriden School | Strathfield |
| 278 | English EAL/D | Nguyen, Ly Tam Nhu | 2 | Bonnyrigg High School | Bonnyrigg |
| 279 | English EAL/D | Wang, Yong | 3 | Burwood Girls High School | Croydon |
| 280 | English EAL/D | Nguyen, Lan Anh | 4 | Beverly Hills Girls High School | Beverly Hills |
| 281 | English EAL/D | Zhou, Kaiyang | 5 | The Kings School | North Parramatta |
| 282 | English EAL/D | Chan, Wing Sze | 6 | Kogarah High School | Kogarah |
| 283 | English EAL/D | Pham, Ai Thu | 7 | Bonnyrigg High School | Bonnyrigg |
| 284 | English EAL/D | Xie, Hanke | 7 | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse |
| 285 | English EAL/D | Wang, Huaiyue | 9 | Pymble Ladies College | Pymble |
| 286 | English EAL/D | Yip, Max Shing Hoi | 10 | Ryde Secondary College | Ryde |
| 287 | English Extension 1 | Chipman, Kate Teresa | 1 | Hornsby Girls High School | Hornsby |
| 288 | English Extension 1 | Gerrans, Tom | 2 | St Augustines College | Brookvale |
| 289 | English Extension 1 | Ung, Michelle | 3 | Prairiewood High School | Prairiewood |
| 290 | English Extension 1 | You, Metilda Yun Mei | 4 | Meriden School | Strathfield |
| 291 | English Extension 1 | Lalic, Bianca | 5 | Domremy College | Five Dock |
| 292 | English Extension 1 | Lambie, Ava | 6 | Oxley College | Burradoo |
| 293 | English Extension 1 | Cowlishaw, Lucy | 7 | Our Lady of the Sacred Heart College | Kensington |
| 294 | English Extension 1 | Paton, Mayling Natalie Vera | 8 | Kambala | Rose Bay |
| 295 | English Extension 1 | Finlayson, Lara Louise | 9 | Kambala | Rose Bay |
| 296 | English Extension 1 | Halliday Shand, Rachel | 10 | Ravenswood School for Girls | Gordon |
| 297 | English Extension 2 | Saywell, Lucy | 1 | Hunter Valley Grammar School | Ashtonfield |
| 298 | English Extension 2 | Krishna, Priyanka | 2 | Australian International School Malaysia | Selangor, Malaysia |
| 299 | English Extension 2 | Desai, Anjalee | 3 | Kambala | Rose Bay |
| 300 | English Extension 2 | Rabbani, Amal | 4 | Tempe High School | Tempe |