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.
| 26245 | O'Donnell, Abbey Rose | Loreto Kirribilli | Kirribilli | Food Technology | DA | |
| 26246 | O'Donnell, Abbey Rose | Loreto Kirribilli | Kirribilli | Visual Arts | DA | |
| 26247 | O'Donnell, Alexia | Rosebank College | Five Dock | Mathematics Standard 2 | DA | |
| 26248 | O'Donnell, Alexia | Rosebank College | Five Dock | Studies of Religion II | DA | |
| 26249 | O'Donnell, Henry Miller | St Ignatius College | Lane Cove | Studies of Religion I | DA | |
| 26250 | O'Donnell, Jessica | Nowra High School | Nowra | Ancient History | DA | |
| 26251 | O'Donnell, Jessica | Nowra High School | Nowra | English Advanced | DA | |
| 26252 | O'Donnell, Jessica | Nowra High School | Nowra | Legal Studies | DA | |
| 26253 | O'Donohoe Deering, Caoimhe | St George Girls High School | Kogarah | Drama | DA | |
| 26254 | O'Donohoe Deering, Caoimhe | St George Girls High School | Kogarah | English Advanced | DA | |
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| 26255 | O'Donohoe Deering, Caoimhe | St George Girls High School | Kogarah | History Extension | DA | |
| 26256 | O'Donohoe Deering, Caoimhe | St George Girls High School | Kogarah | Modern History | DA | |
| 26257 | O'Driscoll, Jessica | St Scholasticas College Glebe Point | Glebe Point | Mathematics Advanced | DA | |
| 26258 | O'Dwyer, Emily | Xavier Catholic College Ballina | Skennars Head | Drama | DA | |
| 26259 | O'Dwyer, Hannah | St Francis De Sales Regional College | Leeton | Visual Arts | DA | |
| 26260 | O'Farrell, Caitlin Isobel | Loreto Kirribilli | Kirribilli | All-rounder | ||
| 26261 | O'Farrell, Caitlin Isobel | Loreto Kirribilli | Kirribilli | Biology | DA | |
| 26262 | O'Farrell, Caitlin Isobel | Loreto Kirribilli | Kirribilli | Business Studies | DA | |
| 26263 | O'Farrell, Caitlin Isobel | Loreto Kirribilli | Kirribilli | English Advanced | DA | |
| 26264 | O'Farrell, Caitlin Isobel | Loreto Kirribilli | Kirribilli | Mathematics Standard 2 | DA | |
| 26265 | O'Farrell, Caitlin Isobel | Loreto Kirribilli | Kirribilli | Personal Development, Health and Physical Education | DA | |
| 26266 | O'Farrell, Caitlin Isobel | Loreto Kirribilli | Kirribilli | Studies of Religion II | DA | |
| 26267 | O'Gorman, Isabella Catherine | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | Ancient History | DA | |
| 26268 | O'Gorman, Isabella Catherine | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | English Advanced | DA | |
| 26269 | O'Gorman, Isabella Catherine | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | English Extension 1 | DA | |
| 26270 | O'Gorman, Isabella Catherine | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | Legal Studies | DA | |
| 26271 | O'Gorman, Isabella Catherine | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | Studies of Religion II | DA | |
| 26272 | O'Grady, Angus | Cammeraygal High School | Crows Nest | Engineering Studies | DA | |
| 26273 | O'Grady, Angus | Cammeraygal High School | Crows Nest | Mathematics Extension 1 | DA | |
| 26274 | O'Grady, Angus | Cammeraygal High School | Crows Nest | Physics | DA | |
| 26275 | O'Grady, Angus | Cammeraygal High School | Crows Nest | Software Design and Development | DA | |
| 26276 | O'Grady, Kelsey | Cammeraygal High School | Crows Nest | Society and Culture | DA | |
| 26277 | O'Hare, Ryleigh | Mater Dei Catholic College | Wagga Wagga | Agriculture | DA | |
| 26278 | O'Hearn, Grace | Willoughby Girls High School | Willoughby | Japanese Continuers | DA | |
| 26279 | O'Hehir, Zachary | William Clarke College | Kellyville | Mathematics Advanced | DA | |
| 26280 | O'Kane, Henry | St Josephs College Hunters Hill | Hunters Hill | Visual Arts | DA | |
| 26281 | O'Kane, Patrick | St Aloysius College | Milsons Point | All-rounder | ||
| 26282 | O'Kane, Patrick | St Aloysius College | Milsons Point | Economics | DA | |
| 26283 | O'Kane, Patrick | St Aloysius College | Milsons Point | English Advanced | DA | |
| 26284 | O'Kane, Patrick | St Aloysius College | Milsons Point | Mathematics Advanced | DA | |
| 26285 | O'Kane, Patrick | St Aloysius College | Milsons Point | Modern History | DA | |
| 26286 | O'Kane, Patrick | St Aloysius College | Milsons Point | Studies of Religion II | DA | |
| 26287 | O'Keefe, Jake | Gilroy Catholic College | Castle Hill | History Extension | DA | |
| 26288 | O'Keefe, Max | St Aloysius College | Milsons Point | Mathematics Advanced | DA | |
| 26289 | O'Keeffe, Jason | Northern Beaches Christian School | Terrey Hills | Business Studies | DA | |
| 26290 | O'Keeffe, Jason | Northern Beaches Christian School | Terrey Hills | Mathematics Advanced | DA | |
| 26291 | O'Laco, Joshua | Christian Brothers High School Lewisham | Lewisham | Chemistry | DA | |
| 26292 | O'Laco, Joshua | Christian Brothers High School Lewisham | Lewisham | Mathematics Advanced | DA | |
| 26293 | O'Laco, Joshua | Christian Brothers High School Lewisham | Lewisham | Mathematics Extension 1 | DA | |
| 26294 | O'Leary, Ashleigh | Asquith Girls High School | Asquith | French Continuers | DA | |