| Age | Event | Time | Name | School | Year |
|---|---|---|---|---|---|
| All age | 100m freestyle | 59.30 | Chris Song | Kent Road PS | 2025 |
| 8 years | 50m freestyle | 33.93 | Kenrick Monk | Marayong PS | 1996 |
| 9 years | 50m freestyle | 31.27 | Titus Teoh | Artarmon PS | 2024 |
| 10 years | 50m freestyle | 29.35 | Taehyun Kim | Denistone East PS | 2026 |
| 11 years | 50m freestyle | 28.22 | Tane Bidois | Glenorie PS | 2016 |
| 12 years | 50m freestyle | 26.79 | Chris Song | Kent Road PS | 2025 |
| 13 years | 50m freestyle | 27.72 | Djaran Smith | St Patricks Macksville | 2005 |
| Junior | 50m breaststroke | 38.27 | Aiden Guo | Australian Christian College, Marsden Park | 2026 |
| 11 years | 50m breaststroke | 36.47 | Xavier Hsu | Sydney Grammar Edgecliff | 2024 |
| 12/13 years | 50m breaststroke | 33.24 | Xavier Hsu | Sydney Grammar Edgecliff | 2025 |
| Junior | 50m backstroke | 34.34 | Taehyun Kim | Denistone East PS | 2026 |
| 11 years | 50m backstroke | 31.70 | Tane Bidois | Glenorie PS | 2016 |
| 12/13 years | 50m backstroke | 31.56 | Hayden Hoang | Trinity PS | 2018 |
| Junior | 50m butterfly | 31.86 | Alson Ji | Kent Road | 2026 |
| 11 years | 50m butterfly | 30.52 | Titus Teoh | Artarmon PS | 2026 |
| 12/13 years | 50m butterfly | 29.48 | Alastair Brill | John Purchase PS | 2026 |
| Senior | 200m ind. medley | 2:26.98 | Alastair Brill | John Purchase PS | 2026 |
| Junior | 200m ind. medley | 2:40.33 | Titus Teoh | Artarmon PS | 2025 |
| Junior | 4 x 50m relay | 2:13.63 | (8/9/10 years) | Knox Grammar Prep | 2019 |
| Senior | 4 x 50m relay | 1:56.58 | (11/12/13 years) | The Scots College | 2024 |
| Juvenile | 4 x 50m relay | 2:34.20 | (8/9 years) | Connell's Point PS | 1976 |
| Junior | 4 x 50m relay | 2:18.50 | (10/11 years) | Gunnedah PS | 1975 |
| All age | Medley relay | 2:27.40 | Met West | 1977 | |
| All age | 5 x 50m relay | 2:39.43 | CIS | 2021 | |
| All age | 4 x 50m Earl Magee relay | 2:23.66 | Binya CS | 2026 | |
| All age | 4 x 50m Peter Dobson relay | 2:15.41 | St Johns Trangie | 2018 |