Heat 3
mercredi 12 décembre 2018, 03h54 GMT – 03h54 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Katinka Hosszú | Hungary | 2′ 4.68″ |
| 2 |  Nao Kobayashi | Japan | + 0.6″ |
| 3 |  Ilaria Bianchi | Italy | + 1.72″ |
| 4 | Ana Monteiro | Portugal | + 1.81″ |
| 5 | Claudia Hufnagl | Austria | + 6.03″ |
| 6 | Amina Kajtaz | Bosnia & Herzegovina | + 8.27″ |
| 7 | Imge Roza Erdemli | Turkey | + 9.4″ |
| 8 | Nicholle Toh | Singapore | + 10.61″ |
| 9 | Alsu Bayramova | Azerbaijan | + 11.48″ |
| 10 | Hye Gyong Ri | DPR Korea | + 13.95″ |