| Age | Event | Time | Name | School | Year |
|---|---|---|---|---|---|
| All age | 100m freestyle | 1:00.34 | Justin Lee | Sydney Grammar St Ives | 2013 |
| 8 years | 50m freestyle | 33.93 | Kenrick Monk | Marayong PS | 1996 |
| 9 years | 50m freestyle | 31.63 | Kenrick Monk | Marayong PS | 1997 |
| 10 years | 50m freestyle | 29.81 | Carter McGee | Shore | 2021 |
| 11 years | 50m freestyle | 28.22 | Tane Bidois | Glenorie PS | 2016 |
| 12 years | 50m freestyle | 27.61 | Oliver Moody | St Catherine's Singleton | 2010 |
| 13 years | 50m freestyle | 27.72 | Djaran Smith | St Patricks Macksville | 2005 |
| Junior | 50m breaststroke | 39.72 | Sunny Kito | Forestville PS | 2022 |
| 11 years | 50m breaststroke | 36.57 | Joseph Kim | Thornleigh West PS | 2019 |
| 12/13 years | 50m breaststroke | 35.07 | Djaran Smith | St Patricks Macksville | 2005 |
| Junior | 50m backstroke | 34.65 | Tane Bidois | Glenorie PS | 2015 |
| 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 | 32.14 | Lewis Jewell | The Scots | 2022 |
| 11 years | 50m butterfly | 31.05 | Joseph Kim | Thornleigh PS | 2019 |
| 12/13 years | 50m butterfly | 29.92 | Jaxson Smith | St Peters | 2019 |
| Senior | 200m ind. medley | 2:27.30 | Karl Albertyn | The Kings Prep | 2017 |
| Junior | 200m ind. medley | 2:41.90 | Bo Chung | Haberfield PS | 2018 |
| Junior | 4 x 50m relay | 2:13.63 | (8/9/10 years) | Knox Grammar Prep | 2019 |
| Senior | 4 x 50m relay | 1:57.50 | (11/12/13 years) | Knox Grammar Prep | 2021 |
| 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 | 2:30.47 | Binya PS | 2021 | |
| All age | 4 x 50m Peter Dobson relay | 2:15.41 | St Johns Trangie | 2018 |