Semifinal
mercredi 26 juillet 2017, 17h51 GMT – 17h51 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Etiene Medeiros | Brazil | 27.18″ |
| 2 |  Yuanhui Fu | China | + 0.01″ |
| 3 | Kathleen Baker | United States | + 0.3″ |
| 4 | Georgia Davies | Great Britain | + 0.31″ |
| 5 | Holly Barratt | Australia | + 0.33″ |
| 5 |  Emily Seebohm | Australia | + 0.33″ |
| 7 | Aliaksandra Herasimenia | Belarus | + 0.36″ |
| 8 | Xueer Wang | China | + 0.42″ |
| 9 | Hannah Stevens | United States | + 0.45″ |
| 10 |  Kylie Masse | Canada | + 0.46″ |
| 11 | Anastasia Fesikova | Russia | + 0.47″ |
| 12 | Andrea Berrino | Argentina | + 0.62″ |
| 13 |  Mimosa Jallow | Finland | + 0.77″ |
| 14 |  Simona Kubová | Czech Republic | + 0.85″ |
| 15 | Alicja Tchórz | Poland | + 0.95″ |
| 15 |  Theodora Drakou | Greece | + 0.95″ |