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.
| 26382 | O'Reilly, Logan William | Merewether High School | Broadmeadow | French Beginners | DA | |
| 26383 | O'Reilly, Margaret | Presbyterian Ladies College Sydney | Croydon | Biology | DA | |
| 26384 | O'Reilly, Margaret | Presbyterian Ladies College Sydney | Croydon | Visual Arts | DA | |
| 26385 | O'Reilly, Quinn | Parramatta Marist High School | Westmead | Mathematics Advanced | DA | |
| 26386 | O'Reilly, Quinn | Parramatta Marist High School | Westmead | Studies of Religion I | DA | |
| 26387 | O'Rourke, Alexandra | SCEGGS Darlinghurst | Darlinghurst | Personal Development, Health and Physical Education | DA | |
| 26388 | O'Rourke, Alexandra | SCEGGS Darlinghurst | Darlinghurst | Visual Arts | DA | |
| 26389 | O'Rourke, John-Edward Noel | St Ignatius College | Lane Cove | Mathematics Extension 1 | DA | |
| 26390 | O'Rourke, John-Edward Noel | St Ignatius College | Lane Cove | Studies of Religion I | DA | |
| 26391 | O'Rourke, Lucy | Tempe High School | Tempe | Visual Arts | DA | |
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| 26392 | O'Rourke, Oliver | Northern Beaches Secondary College Freshwater Campus | Freshwater | English Standard | DA | |
| 26393 | O'Rourke, Oliver | Northern Beaches Secondary College Freshwater Campus | Freshwater | Industrial Technology | DA | |
| 26394 | O'Rourke, Oliver | Northern Beaches Secondary College Freshwater Campus | Freshwater | Industrial Technology | Subject rank | 5 |
| 26395 | O'Shannessy, Monique | St Ursulas College | Kingsgrove | All-rounder | ||
| 26396 | O'Shannessy, Monique | St Ursulas College | Kingsgrove | English Advanced | DA | |
| 26397 | O'Shannessy, Monique | St Ursulas College | Kingsgrove | Legal Studies | DA | |
| 26398 | O'Shannessy, Monique | St Ursulas College | Kingsgrove | Mathematics Standard 2 | DA | |
| 26399 | O'Shannessy, Monique | St Ursulas College | Kingsgrove | Personal Development, Health and Physical Education | DA | |
| 26400 | O'Shannessy, Monique | St Ursulas College | Kingsgrove | Studies of Religion II | DA | |
| 26401 | O'Shea, Abbey | Gosford High School | Gosford | French Beginners | DA | |
| 26402 | O'Shea, Caitlin Elise | Northern Beaches Secondary College Mackellar Girls Campus | Manly Vale | Business Studies | DA | |
| 26403 | O'Shea, Caitlin Elise | Northern Beaches Secondary College Mackellar Girls Campus | Manly Vale | English Advanced | DA | |
| 26404 | O'Shea, Daniel | International Grammar School | Ultimo | Aboriginal Studies | DA | |
| 26405 | O'Sullivan, Cameron | St Josephs College Hunters Hill | Hunters Hill | Economics | DA | |
| 26406 | O'Sullivan, Cameron | St Josephs College Hunters Hill | Hunters Hill | Modern History | DA | |
| 26407 | O'Sullivan, Cameron | St Josephs College Hunters Hill | Hunters Hill | Personal Development, Health and Physical Education | DA | |
| 26408 | O'Sullivan, Cameron | St Josephs College Hunters Hill | Hunters Hill | Studies of Religion II | DA | |
| 26409 | O'Sullivan, Ciara | St Johns College Woodlawn | Lismore | Japanese Beginners | DA | |
| 26410 | O'Sullivan, Damon Ryan | St Ignatius College | Lane Cove | Geography | DA | |
| 26411 | O'Sullivan, Niamh | St Vincents College | Potts Point | Dance | DA | |
| 26412 | O'Sullivan, Niamh | St Vincents College | Potts Point | English Advanced | DA | |
| 26413 | O'Sullivan, Niamh | St Vincents College | Potts Point | Personal Development, Health and Physical Education | DA | |
| 26414 | O'Sullivan, Niamh | St Vincents College | Potts Point | Studies of Religion II | DA | |
| 26415 | O'Sullivan, Sophie Rose | St Francis Xaviers College | Hamilton | Community and Family Studies | DA | |
| 26416 | O'Sullivan, Sophie Rose | St Francis Xaviers College | Hamilton | Mathematics Standard 2 | DA | |
| 26417 | O'Sullivan, William Gilbert | Knox Grammar School | Wahroonga | Industrial Technology | DA | |
| 26418 | O'Sullivan, William Gilbert | Knox Grammar School | Wahroonga | Mathematics Standard 2 | DA | |
| 26419 | O'Toole, Amy | Northern Beaches Secondary College Freshwater Campus | Freshwater | Industrial Technology | DA | |
| 26420 | O'Toole, Austin | Conservatorium High School | Sydney | Music 2 | DA | |
| 26421 | O'Toole, Jaclyn | Byron Bay High School | Byron Bay | Ancient History | DA | |
| 26422 | O'Toole, Jaclyn | Byron Bay High School | Byron Bay | Society and Culture | DA | |
| 26423 | O'Toole, Jaclyn | Byron Bay High School | Byron Bay | Visual Arts | DA | |
| 26424 | O'Toole, Josephine | Arden Anglican School Epping Campus | Epping | Visual Arts | DA | |
| 26425 | O'Toole, William | Belmont Christian College | Belmont North | Mathematics Extension 1 | DA | |
| 26426 | O'Young, Brianna Ying Shi | Northern Beaches Secondary College Mackellar Girls Campus | Manly Vale | Music Extension | DA | |
| 26427 | O, Narah | William Clarke College | Kellyville | All-rounder | ||
| 26428 | O, Narah | William Clarke College | Kellyville | Biology | DA | |
| 26429 | O, Narah | William Clarke College | Kellyville | English Advanced | DA | |
| 26430 | O, Narah | William Clarke College | Kellyville | English Extension 1 | DA | |
| 26431 | O, Narah | William Clarke College | Kellyville | Mathematics Advanced | DA | |