Semifinal
Saturday, July 29, 2017, 06:45pm GMT – 06:45pm GMT
| Name | Team | Times | |
|---|---|---|---|
| 1 |  Camille Lacourt | France | 24.3″ |
| 2 |  Junya Koga | Japan | + 0.14″ |
| 3 |  Matt Grevers | United States | + 0.35″ |
| 4 |  Jiayu Xu | China | + 0.37″ |
| 5 | Justin Ress | United States | + 0.4″ |
| 6 | Pavel Sankovich | Belarus | + 0.44″ |
| 7 |  Jérémy Stravius | France | + 0.51″ |
| 8 | Jonatan Kopelev | Israel | + 0.54″ |
| 9 | Grigory Tarasevich | Russia | + 0.56″ |
| 10 |  Apostolos Christou | Greece | + 0.58″ |
| 10 |  Richárd Bohus | Hungary | + 0.58″ |
| 12 |  Guilherme Guido | Brazil | + 0.61″ |
| 13 | Tomasz Polewka | Poland | + 0.65″ |
| 14 | Youngjun Won | Korea | + 0.72″ |
| 15 | I Gede Siman Sudartawa | Indonesia | + 0.74″ |
| 16 |  Javier Acevedo | Canada | + 0.83″ |