Freestyle
| Distance | Value | Date | Swimmer | Meet | |
|---|---|---|---|---|---|
| 50 m | 2175 | Aug 25, 2017 | Michael Andrew United States | 2017 World Junior Championships Indianapolis, United States | |
| 50 m | 2175 | Aug 26, 2017 | Michael Andrew United States | 2017 World Junior Championships Indianapolis, United States | |
| 100 m | 4730 | Jul 8, 2021 | David Popovici Romania | 2021 European Junior Championships Rome, Italy | |
| 200 m | 1:4462 | Jul 25, 2021 | Sun-woo Hwang South Korea | 2021 Olympic Games Tokyo, Japan | |
| 400 m | 03:4460 | Apr 1, 2014 | Mack Horton Australia | 2014 Australian Championships Brisbane, Australia | |
| 800 m | 07:4567 | Aug 28, 2013 | Mack Horton Australia | 2013 World Junior Championships Dubai, United Arab Emirates | |
| 1500 m | 14:4609 | Aug 25, 2019 | Franko Grgic Croatia | 2019 World Junior Championships Budapest, Hungary |
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