Heats
mardi 23 juillet 2019, 03h17 GMT – 03h17 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Sarah Sjöström | Sweden | 1′ 55.14″ |
| 2 |  Siobhán Haughey | Hong Kong, China | + 0.88″ |
| 3 |  Ariarne Titmus | Australia | + 1.2″ |
| 4 |  Junxuan Yang | China | + 1.29″ |
| 5 |  Federica Pellegrini | Italy | + 1.67″ |
| 6 |  Penny Oleksiak | Canada | + 2.11″ |
| 7 |  Barbora Seemanová | Czech Republic | + 2.18″ |
| 8 | Bingjie Li | China | + 2.45″ |
| 9 | Freya Anderson | Great Britain | + 2.54″ |
| 10 | Veronika Andrusenko | Russia | + 2.63″ |
| 11 | Valeria Salamatina | Russia | + 2.84″ |
| 12 |  Rio Shirai | Japan | + 2.96″ |
| 13 |  Charlotte Bonnet | France | + 3.07″ |
| 14 |  Allison Schmitt | United States | + 3.59″ |
| 15 | Valentine Dumont | Belgium | + 3.97″ |
| 16 | Chihiro Igarashi | Japan | + 4.04″ |
| 17 |  Katinka Hosszú | Hungary | + 4.3″ |
| 18 | Holly Hibbott | Great Britain | + 4.46″ |
| 19 |  Erika Fairweather | New Zealand | + 4.54″ |
| 20 | Elisbet Gámez | Cuba | + 5.19″ |
| 21 | Aleksandra Polanska | Poland | + 5.2″ |
| 22 | Katja Fain | Slovenia | + 5.24″ |
| 23 | Ting Wen Quah | Singapore | + 5.25″ |
| 24 | Marlene Kahler | Austria | + 5.42″ |
| 25 |  Maria Ugolkova | Switzerland | + 5.6″ |
| 26 | Julia Hassler | Liechtenstein | + 5.85″ |
| 27 | Nathanan Junkrajang | Thailand | + 6.72″ |
| 28 | Monique Olivier | Luxembourg | + 6.82″ |
| 29 | Ieva Maluka | Latvia | + 7.24″ |
| 30 |  Rebecca Meder | South Africa | + 7.56″ |
| 31 | Joanna Evans | Bahamas | + 7.62″ |
| 32 | Hyun-Ju Jo | Korea | + 8.02″ |
| 33 | Aleksa Gold | Estonia | + 8.16″ |
| 34 | Nicole Oliva | Philippines | + 9.12″ |
| 35 | Maria Álvarez | Colombia | + 10.14″ |
| 36 | Gabriela Santis | Guatemala | + 10.22″ |
| 37 | Emily Gantriis | Denmark | + 10.3″ |
| 38 | Elan Daley | Bermuda | + 10.33″ |
| 39 | Amanda Alfaro | Costa Rica | + 11.46″ |
| 40 | Sara Pastrana | Honduras | + 11.62″ |
| 41 | Snæfriður Jórunnardóttir | Iceland | + 12.29″ |
| 42 | Gabriella Doueihy | Lebanon | + 13.93″ |
| 43 | Ani Poghosyan | Armenia | + 13.95″ |
| 44 | Tiana Rabarijaona | Madagascar | + 15.07″ |
| 45 | Paige van der Westhuizen | Zimbabwe | + 16.22″ |
| 46 | Danielle Treasure | Barbados | + 16.37″ |
| 47 | Nicole Frank | Uruguay | + 16.42″ |
| 48 | Gaurika Singh | Nepal | + 17.86″ |
| 49 | Leedia Alsafadi | Jordan | + 18.05″ |
| 50 | Andjela Antunovic | Montenegro | + 18.48″ |
| 51 | Abiola Ogunbanwo | Nigeria | + 20.3″ |
| 52 | Natalia Kuipers | Virgin Islands | + 20.31″ |
| 53 | Elizaveta Rogozhnikova | Kyrgyzstan | + 20.32″ |
| 54 | Mya DeFreitas | St. Vincent & the Grenadines | + 20.34″ |
| 55 | Tinatin Kevlishvili | Georgia | + 22.57″ |
| 56 | Zaira Forson | Ghana | + 23.6″ |
| 57 | Olivia Fuller | Antigua and Barbuda | + 24.57″ |
| 58 | Mineri Gomez | Guam | + 28.59″ |
| 59 | Judith Meauri | Papua New Guinea | + 30.28″ |
| 60 | Jinju Thompson | Northern Mariana Islands | + 37.21″ |
| 61 | Charissa Panuve | Tonga | + 38.17″ |
| Emma McKeon | Australia | DNF | |
| Katie Ledecky | United States | DNF | |
| Taylor Ruck | Canada | DNF |