This report ranks the best HSC students in 2018 in order of their total number of subjects awarded.
A subject award can be either a Distinguished Achiever award or a Subject Rank award (top place in subject).
Where students have equal numbers of subject awards, those with an All Rounder award are ranked higher. As additional tie-breakers, Subject Rank awards are ranked by their place value and they are also ranked higher than Distinguished Achiever awards. Where all of these measures are equal, entries are listed alphabetically.
| 1 | Rice, Nicholas | Sydney Grammar School | Darlinghurst | 9 | Yes | |
| 2 | McCartney, William | Sydney Grammar School | Darlinghurst | 9 | Yes | |
| 3 | Pavlou, Eric | Sydney Grammar School | Darlinghurst | 8 | Yes | |
| 4 | Gupta, Kiran | Sydney Grammar School | Darlinghurst | 8 | Yes | |
| 5 | Baker, Caitlin Elizabeth | Karabar High School | Queanbeyan | 8 | Yes | |
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| 6 | Duchen, Ari | Sydney Grammar School | Darlinghurst | 8 | Yes | |
| 7 | Fuccilli, Patrick Nino | St Ignatius College | Lane Cove | 8 | Yes | |
| 8 | Kang, Isabella | North Sydney Girls High School | Crows Nest | 8 | Yes | |
| 9 | Lee, Jasmine | Girraween High School | Girraween | 8 | Yes | |
| 10 | Yates, Benjamin | Sydney Grammar School | Darlinghurst | 8 | Yes | |
| 11 | Dharma, Ryan | Marcellin College | Randwick | 8 | Yes | |
| 12 | Forrest, Daniel Jason | James Ruse Agricultural High School | Carlingford | 8 | Yes | |
| 13 | King, Madeline Kate | Barker College | Hornsby | 8 | Yes | |
| 14 | Poier, Luke | Sydney Grammar School | Darlinghurst | 8 | Yes | |
| 15 | Smith, Joshua | Northern Beaches Secondary College Balgowlah Boys Campus | Balgowlah | 8 | Yes | |
| 16 | Tan, Julia | The Hills Grammar School | Kenthurst | 8 | Yes | |
| 17 | Zhu, Congxiao (Amanda) | Kincoppal Rose Bay School of the Sacred Heart | Vaucluse | 8 | Yes | |
| 18 | Yao, Alexander Desmond | Sydney Grammar School | Darlinghurst | 7 | Yes | |
| 19 | Fox, Eliza | Ascham School | Edgecliff | 7 | Yes | |
| 20 | Parsons, Rebekah | Monte Sant Angelo Mercy College | North Sydney | 7 | Yes | |
| 21 | Petrin, Claudia Sophia | Macarthur Anglican School | Cobbitty | 7 | Yes | |
| 22 | Mitchell, Zoe | Central Coast Grammar School | Erina Heights | 7 | Yes | |
| 23 | Mok, Joshua | Sydney Grammar School | Darlinghurst | 7 | Yes | |
| 24 | Lin, Jacinta | Abbotsleigh | Wahroonga | 7 | Yes | |
| 25 | Crawford, Alexander | Sydney Grammar School | Darlinghurst | 7 | Yes | |