This report shows the 2018 top student in each HSC subject as awarded by the NSW Education Standards Authority. Students must achieve a band 6 or band E4 result in the relevant subject to appear in this list. Rankings are calculated from student HSC marks in the subject, or, where this results in a tie, from the average of the students' examination and assessment marks.
This report is equivalent to the Subject Top Achievers report after applying the filter "Rank equals 1".
| 1 | Aboriginal Studies | Bui, Emma | Cheltenham Girls High School | Beecroft |
| 2 | Agriculture | Coles, Phoebe | Pymble Ladies College | Pymble |
| 3 | Ancient History | McCartney, William | Sydney Grammar School | Darlinghurst |
| 4 | Ancient History | Parsons, Rebekah | Monte Sant Angelo Mercy College | North Sydney |
| 5 | Arabic Beginners | Alameddine, Awatef | Auburn Girls High School | Auburn |
| 6 | Arabic Continuers | Eskandar, Domara | Saturday School of Comm. Lang. Birrong Girls High School | Birrong |
| 7 | Arabic Extension | Eskandar, Domara | Saturday School of Comm. Lang. Birrong Girls High School | Birrong |
| 8 | Armenian Continuers | Melkumyan, Davit | Saturday School of Comm. Lang. Chatswood High School | Chatswood |
| 9 | Automotive Examination | Kennett, Timothy James | Western Sydney Institute Mt Druitt College | Mount Druitt |
| 10 | Biology | Fox, Eliza | Ascham School | Edgecliff |
| 11 | Business Services Examination | Jessamine, Victoria | Menai High School | Menai |
| 12 | Business Services Examination | Spiropoulos, Georgia | St Ursulas College | Kingsgrove |
| 13 | Business Studies | Yang, Yazhou (Tim) | Chatswood High School | Chatswood |
| 14 | Chemistry | Li, Raymond Kai Chun | James Ruse Agricultural High School | Carlingford |
| 15 | Chinese and Literature | Feng, Runzi | Reddam House Bondi Campus | North Bondi |
| 16 | Chinese Beginners | Kim, Seohyun | NSW School of Languages | Randwick |
| 17 | Chinese Continuers | Lim, Matthew | The Scots College | Bellevue Hill |
| 18 | Chinese Extension | Scotter, Nathan | Sydney Grammar School | Darlinghurst |
| 19 | Chinese in Context | Li, Katherine Jiaxin | Meriden School | Strathfield |
| 20 | Classical Greek Continuers | Mok, Joshua | Sydney Grammar School | Darlinghurst |
| 21 | Classical Greek Extension | Pavlou, Eric | Sydney Grammar School | Darlinghurst |
| 22 | Classical Hebrew Continuers | Hirschowitz, Rivka | Moriah College | Bondi Junction |
| 23 | Classical Hebrew Extension | Rev, Ariella | Kesser Torah College | Dover Heights |
| 24 | Community and Family Studies | Agostini, Lauren | Aquinas College | Menai |
| 25 | Community and Family Studies | Brown, Madison | Broughton Anglican College | Campbelltown |