4 × 100 metres Freestyle Relay, Boys
Participants
| Nr. | Athlete | NOC |
|---|---|---|
| 1 | Lewis Blackburn |  AUS |
| 2 | Ashton Brinkworth | AUS |
| 3 | Joseph Jackson | AUS |
| 4 | Stuart Swinburn | AUS |
| 5 | Lucas Costa Peixoto |  BRA |
| 6 | André de Souza | BRA |
| 7 | Vitor de Souza | BRA |
| 8 | Murilo Sartori | BRA |
| 9 | Hong Jinquan |  CHN |
| 10 | Shen Jiahao | CHN |
| 11 | Sun Jiajun | CHN |
| 12 | Wang Guanbin | CHN |
| 13 | Federico Burdisso |  ITA |
| 14 | Johannes Calloni | ITA |
| 15 | Thomas Ceccon | ITA |
| 16 | Marco De Tullio | ITA |
| 17 | Yu Hanaguruma |  JPN |
| 18 | Shinnosuke Ishikawa | JPN |
| 19 | Taku Taniguchi | JPN |
| 20 | Keisuke Yoshida | JPN |
| 21 | Ethan du Preez |  RSA |
| 22 | Hendrik Duvenhage | RSA |
| 23 | Michael Houlie | RSA |
| 24 | Gabriel Nortje | RSA |
| 25 | Vladislav Gerasimenko |  RUS |
| 26 | Kliment Kolesnikov | RUS |
| 27 | Daniil Markov | RUS |
| 28 | Andrey Minakov | RUS |
| 29 | Will Barao |  USA |
| 30 | Ethan Dang | USA |
| 31 | Ethan Harder | USA |
| 32 | Jake Johnson | USA |