This is the NSW HSC Honour Roll, listing every award or prize won by New South Wales HSC students in 2020, along with their school and subject details.
The report includes all Distinguished Achiever awards, All Rounder awards, and Subject Top Achiever awards (with rankings). First in Course awards are shown as Subject Top Achiever awards with a ranking of '1' i.e. first place.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 26432 | O, Narah | William Clarke College | Kellyville | Mathematics Extension 1 | DA | |
| 26433 | O, Narah | William Clarke College | Kellyville | Visual Arts | DA | |
| 26434 | O, Narah | William Clarke College | Kellyville | English Extension 1 | Subject rank | 5 |
| 26435 | O, Warren | Patrician Brothers College Fairfield | Fairfield | Business Studies | DA | |
| 26436 | O, Warren | Patrician Brothers College Fairfield | Fairfield | English Extension 1 | DA | |
| 26437 | O, Warren | Patrician Brothers College Fairfield | Fairfield | Mathematics Standard 2 | DA | |
| 26438 | O, Warren | Patrician Brothers College Fairfield | Fairfield | Studies of Religion I | DA | |
| 26439 | Oalin, Regie | Rouse Hill High School | Rouse Hill | Chinese Beginners | DA | |
| 26440 | Oalin, Regie | Rouse Hill High School | Rouse Hill | Visual Arts | DA | |
| 26441 | Oalin, Roman | Rouse Hill High School | Rouse Hill | Music 1 | DA | |
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| 26442 | Oarto, Kayla Jovanna | IPEKA Integrated Christian School | Jakarta, Indonesia | Biology | DA | |
| 26443 | Oarto, Kayla Jovanna | IPEKA Integrated Christian School | Jakarta, Indonesia | Chemistry | DA | |
| 26444 | Oarto, Kayla Jovanna | IPEKA Integrated Christian School | Jakarta, Indonesia | Economics | DA | |
| 26445 | Oarto, Kayla Jovanna | IPEKA Integrated Christian School | Jakarta, Indonesia | Mathematics Advanced | DA | |
| 26446 | Oates, Elizabeth | Cheltenham Girls High School | Beecroft | Aboriginal Studies | DA | |
| 26447 | Oates, Harriet | The Armidale School | Armidale | Music 1 | DA | |
| 26448 | Oayda, Emilie Thornett | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | English Advanced | DA | |
| 26449 | Oayda, Emilie Thornett | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | English Extension 1 | DA | |
| 26450 | Oayda, Emilie Thornett | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | Visual Arts | DA | |
| 26451 | Obaid-Richardson, Tahlia | Holy Spirit Catholic College Lakemba | Lakemba | Mathematics Standard 2 | DA | |
| 26452 | Obaydin, Joel | Smiths Hill High School | Wollongong | English Advanced | DA | |
| 26453 | Obaydin, Joel | Smiths Hill High School | Wollongong | English Extension 1 | DA | |
| 26454 | Obaydin, Joel | Smiths Hill High School | Wollongong | Modern History | DA | |
| 26455 | Oberlander, Tasha | St Josephs Catholic College | East Gosford | English Advanced | DA | |
| 26456 | Obluda, Chloe | Crestwood High School | Baulkham Hills | Ancient History | DA | |
| 26457 | Ocampo, Jason | St John Paul II Catholic College Nirimba | Nirimba Fields | Entertainment Industry Examination | DA | |
| 26458 | Ocampo, Jason | St John Paul II Catholic College Nirimba | Nirimba Fields | Music 1 | DA | |
| 26459 | Ocampo, Kayla | NSW School of Languages | Petersham | Korean Beginners | Subject rank | 2 |
| 26460 | Ocampo, Kayla | Tyndale Christian School | Blacktown | Business Studies | DA | |
| 26461 | Ocampo, Kayla | Tyndale Christian School | Blacktown | Korean Beginners | DA | |
| 26462 | Ocampo, Kayla | Tyndale Christian School | Blacktown | Music 1 | DA | |
| 26463 | Occleshaw, Finn | Eden Marine High School | Eden | English Extension 2 | DA | |
| 26464 | Oda, Kenta | Menai High School | Menai | Japanese Continuers | DA | |
| 26465 | Oda, Kenta | Menai High School | Menai | Music 1 | DA | |
| 26466 | Odd, Sienna | St Leos Catholic College | Wahroonga | Drama | DA | |
| 26467 | Odd, Sienna | St Leos Catholic College | Wahroonga | Visual Arts | DA | |
| 26468 | Odell, Thomas Michael | SHORE Sydney Church of England Grammar School | North Sydney | Business Studies | DA | |
| 26469 | Odell, Thomas Michael | SHORE Sydney Church of England Grammar School | North Sydney | Geography | DA | |
| 26470 | Odell, Thomas Michael | SHORE Sydney Church of England Grammar School | North Sydney | Personal Development, Health and Physical Education | DA | |
| 26471 | Odewahn-Oxley, Ashleigh | Castle Hill High School | Castle Hill | Visual Arts | DA | |
| 26472 | Odicho, Joshua | St Narsai Assyrian Christian College | Horsley Park | Mathematics Advanced | DA | |
| 26473 | Odicho, Joshua | St Narsai Assyrian Christian College | Horsley Park | Mathematics Extension 1 | DA | |
| 26474 | Oeding, Callan | St Josephs College Hunters Hill | Hunters Hill | Legal Studies | DA | |
| 26475 | Oen, Nicholas | St Aloysius College | Milsons Point | Mathematics Advanced | DA | |
| 26476 | Offord, Dylan | Trinity Grammar School | Summer Hill | English Advanced | DA | |
| 26477 | Offord, Dylan | Trinity Grammar School | Summer Hill | Geography | DA | |
| 26478 | Offord, Dylan | Trinity Grammar School | Summer Hill | Mathematics Advanced | DA | |
| 26479 | Offord, Dylan | Trinity Grammar School | Summer Hill | Personal Development, Health and Physical Education | DA | |
| 26480 | Ogbonna, Susanna | Good Samaritan Catholic College | Hinchinbrook | Hospitality Examination | DA | |
| 26481 | Ogden, Benjamin | Westfields Sports High School | Fairfield West | Industrial Technology | DA | |