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.
| 26532 | Okuda, Rina | Killarney Heights High School | Killarney Heights | Legal Studies | DA | |
| 26533 | Oldham, Chloe | Brigidine College St Ives | St Ives | Economics | DA | |
| 26534 | Oldham, Chloe | Brigidine College St Ives | St Ives | Legal Studies | DA | |
| 26535 | Oldham, Chloe | Brigidine College St Ives | St Ives | Mathematics Advanced | DA | |
| 26536 | Oldham, Georgie | Barker College | Hornsby | Agriculture | DA | |
| 26537 | Oldham, Georgie | Barker College | Hornsby | Biology | DA | |
| 26538 | Oldham, Georgie | Barker College | Hornsby | Personal Development, Health and Physical Education | DA | |
| 26539 | Oldham, Georgie | Barker College | Hornsby | Agriculture | Subject rank | 6 |
| 26540 | Oldham, Max | Northern Beaches Secondary College Manly Campus | North Curl Curl | Mathematics Advanced | DA | |
| 26541 | Olive, Nuria | Gosford High School | Gosford | English Advanced | DA | |
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| 26542 | Olive, Nuria | Gosford High School | Gosford | English Extension 2 | DA | |
| 26543 | Olive, Nuria | Gosford High School | Gosford | Legal Studies | DA | |
| 26544 | Olive, Stella | Newtown High School of Performing Arts | Newtown | Music 1 | DA | |
| 26545 | Olive, Stella | Newtown High School of Performing Arts | Newtown | Personal Development, Health and Physical Education | DA | |
| 26546 | Oliver, April | Barrenjoey High School | Avalon | Society and Culture | DA | |
| 26547 | Oliver, Daniel | Marist College North Shore | North Sydney | Legal Studies | DA | |
| 26548 | Oliver, Daniel | Marist College North Shore | North Sydney | Personal Development, Health and Physical Education | DA | |
| 26549 | Oliver, Lucie | Girraween High School | Girraween | Business Studies | DA | |
| 26550 | Oliver, Lucie | Girraween High School | Girraween | Modern History | DA | |
| 26551 | Oliver-Sjahry, Hannah | Sydney Girls High School | Surry Hills | Biology | DA | |
| 26552 | Oliver-Sjahry, Hannah | Sydney Girls High School | Surry Hills | English Advanced | DA | |
| 26553 | Oliver-Sjahry, Hannah | Sydney Girls High School | Surry Hills | Mathematics Advanced | DA | |
| 26554 | Olivieri, Sophia | Marist Sisters College Woolwich | Woolwich | English Advanced | DA | |
| 26555 | Olivieri, Sophia | Marist Sisters College Woolwich | Woolwich | English Extension 1 | DA | |
| 26556 | Olivieri, Sophia | Marist Sisters College Woolwich | Woolwich | Mathematics Standard 2 | DA | |
| 26557 | Olivieri, Sophia | Marist Sisters College Woolwich | Woolwich | Modern History | DA | |
| 26558 | Olivieri, Sophia | Marist Sisters College Woolwich | Woolwich | Visual Arts | DA | |
| 26559 | Olivo, Cherelynn | Toongabbie Christian College | Toongabbie | Mathematics Advanced | DA | |
| 26560 | Olles, Sophie | Sydney Girls High School | Surry Hills | French Continuers | DA | |
| 26561 | Olles, Sophie | Sydney Girls High School | Surry Hills | Geography | DA | |
| 26562 | Olles, Sophie | Sydney Girls High School | Surry Hills | Mathematics Advanced | DA | |
| 26563 | Olles, Sophie | Sydney Girls High School | Surry Hills | Mathematics Extension 1 | DA | |
| 26564 | Olley, James | Killarney Heights High School | Killarney Heights | Mathematics Standard 2 | DA | |
| 26565 | Olney, Madeleine | St Andrews Cathedral School | Sydney | Studies of Religion I | DA | |
| 26566 | Olney, Willis | Dubbo College Senior Campus | Dubbo | Personal Development, Health and Physical Education | DA | |
| 26567 | Olsen, Cassandra | Warilla High School | Barrack Heights | Investigating Science | DA | |
| 26568 | Oluk, Carla | Sylvania High School | Sylvania | Community and Family Studies | DA | |
| 26569 | Oluk, Carla | Sylvania High School | Sylvania | English Extension 1 | DA | |
| 26570 | Olumee, Hoshang | The Hills Sports High School | Seven Hills | Mathematics Standard 2 | DA | |
| 26571 | Ombler, Ethan | Arden Anglican School Epping Campus | Epping | Industrial Technology | DA | |
| 26572 | Omm, Mac Olof | Knox Grammar School | Wahroonga | Legal Studies | DA | |
| 26573 | Omm, Mac Olof | Knox Grammar School | Wahroonga | Mathematics Standard 2 | DA | |
| 26574 | Omm, Mac Olof | Knox Grammar School | Wahroonga | Modern History | DA | |
| 26575 | On, Fionna | Chatswood High School | Chatswood | Mathematics Advanced | DA | |
| 26576 | Ong, Duc Thinh | North Sydney Boys High School | Crows Nest | All-rounder | ||
| 26577 | Ong, Duc Thinh | North Sydney Boys High School | Crows Nest | Chemistry | DA | |
| 26578 | Ong, Duc Thinh | North Sydney Boys High School | Crows Nest | English Advanced | DA | |
| 26579 | Ong, Duc Thinh | North Sydney Boys High School | Crows Nest | Mathematics Extension 1 | DA | |
| 26580 | Ong, Duc Thinh | North Sydney Boys High School | Crows Nest | Mathematics Extension 2 | DA | |
| 26581 | Ong, Duc Thinh | North Sydney Boys High School | Crows Nest | Physics | DA | |