Pos. | Bateria | Raia | Nadadora | Nacionalidade | Tempo | Notas |
1 | 8 | 4 | Sjöström, SarahSarah Sjöström | Suécia | 53.01 | Q |
2 | 7 | 6 | Blume, PernillePernille Blume | Dinamarca | 53.13 | Q, |
3 | 6 | 4 | Manuel, SimoneSimone Manuel | Estados Unidos | 53.17 | Q |
4 | 8 | 5 | Oleksiak, PennyPenny Oleksiak | Canadá | 53.18 | Q |
5 | 6 | 5 | Comerford, MalloryMallory Comerford | Estados Unidos | 53.42 | Q |
6 | 8 | 3 | Kromowidjojo, RanomiRanomi Kromowidjojo | Países Baixos | 53.45 | Q |
7 | 7 | 5 | McKeon, EmmaEmma McKeon | Austrália | 53.47 | Q |
8 | 7 | 4 | Campbell, BronteBronte Campbell | Austrália | 53.56 | Q |
9 | 7 | 3 | Pellegrini, FedericaFederica Pellegrini | Itália | 53.92 | Q |
10 | 6 | 6 | Bonnet, CharlotteCharlotte Bonnet | França | 54.00 | Q |
8 | 6 | Zhu Menghui | China | Q |
12 | 7 | 2 | Mainville, SandrineSandrine Mainville | Canadá | 54.22 | Q |
13 | 6 | 3 | Coleman, MichelleMichelle Coleman | Suécia | 54.23 | Q |
14 | 8 | 7 | Anderson, FreyaFreya Anderson | Reino Unido | 54.25 | Q |
15 | 6 | 1 | Haughey, SiobhanSiobhan Haughey | Hong Kong | 54.45 | Q |
16 | 6 | 7 | van der Meer, MaudMaud van der Meer | Países Baixos | 54.49 | DES |
8 | 1 | Murez, AndreaAndrea Murez | Israel | DES |
18 | 7 | 7 | Ai Yanhan | China | 54.54 | |
19 | 6 | 2 | di Pietro, SilviaSilvia di Pietro | Itália | 54.74 | |
20 | 7 | 1 | Ugolkova, MariaMaria Ugolkova | Suíça | 54.81 | |
21 | 8 | 2 | Ikee, RikakoRikako Ikee | Japão | 54.91 | |
22 | 8 | 8 | Lyrio, ManuellaManuella Lyrio | Brasil | 55.32 | |
23 | 6 | 8 | Bro, SigneSigne Bro | Dinamarca | 55.40 | |
24 | 5 | 5 | Gallagher, ErinErin Gallagher | África do Sul | 55.46 | |
25 | 8 | 9 | Osman, FaridaFarida Osman | Egito | 55.52 | |
26 | 7 | 9 | Kolářová, AnnaAnna Kolářová | Chéquia | 55.73 | |
27 | 7 | 0 | Khitraya, YuliyaYuliya Khitraya | Bielorrússia | 55.77 | |
28 | 6 | 9 | Gyurinovics, FanniFanni Gyurinovics | Hungria | 55.86 | |
29 | 8 | 0 | Meynen, JulieJulie Meynen | Luxemburgo | 55.99 | |
30 | 5 | 7 | Hansen, BryndisBryndis Hansen | Islândia | 56.11 | |
31 | 5 | 6 | Nevalainen, LottaLotta Nevalainen | Finlândia | 56.31 | |
32 | 7 | 8 | Nasretdinova, RozaliyaRozaliya Nasretdinova | Rússia | 56.34 | |
33 | 6 | 0 | Bjørnsen, SusannSusann Bjørnsen | Noruega | 56.56 | |
4 | 4 | Bogdanovski, AnastasiaAnastasia Bogdanovski | Macedônia do Norte | |
35 | 5 | 3 | Fa'amausili, GabrielleGabrielle Fa'amausili | Nova Zelândia | 56.60 | |
36 | 5 | 2 | Alkhaldi, JasmineJasmine Alkhaldi | Filipinas | 56.70 | |
37 | 5 | 8 | Ņikitina, GabrielaGabriela Ņikitina | Letônia | 56.77 | |
38 | 5 | 1 | de Bever, McKennaMcKenna de Bever | Peru | 56.95 | |
39 | 4 | 5 | Torrez, KarenKaren Torrez | Bolívia | 57.28 | |
40 | 5 | 4 | Ibáñez, LilianaLiliana Ibáñez | México | 57.40 | |
41 | 4 | 6 | Avila, JulimarJulimar Avila | Honduras | 57.82 | |
42 | 5 | 9 | Passon, FelicityFelicity Passon | Seicheles | 57.99 | |
43 | 4 | 2 | Remersaro, InésInés Remersaro | Uruguai | 58.27 | |
44 | 4 | 3 | Raheem, KimikoKimiko Raheem | Sri Lanka | 58.35 | |
45 | 4 | 1 | Buadromo, MatelitaMatelita Buadromo | Fiji | 58.53 | |
46 | 1 | 3 | Poo-cheong, ElodieElodie Poo-cheong | Ilhas Maurícias | 58.76 | |
47 | 5 | 0 | Ponson, AllysonAllyson Ponson | Aruba | 58.81 | |
48 | 3 | 4 | Ramírez, MónicaMónica Ramírez | Andorra | 58.85 | = |
49 | 4 | 9 | Sanna, AriannaArianna Sanna | República Dominicana | 59.03 | |
50 | 3 | 2 | Leask, DevynDevyn Leask | Zimbabwe | 59.08 | |
4 | 7 | Jumah, BayanBayan Jumah | Síria | |
52 | 1 | 2 | Poghosyan, AniAni Poghosyan | Armênia | 59.27 | |
53 | 3 | 3 | Baqlah, TalitaTalita Baqlah | Jordânia | 59.33 | |
54 | 4 | 8 | Cooper, CatharineCatharine Cooper | Panamá | 59.37 | |
55 | 3 | 1 | Tan Chi Yan | Macau | 59.38 | |
56 | 4 | 0 | Santis, GabrielaGabriela Santis | Guatemala | 59.54 | |
57 | 3 | 5 | Terzić, JovanaJovana Terzić | Montenegro | 59.86 | |
58 | 3 | 8 | Merizaj, NikolNikol Merizaj | Albânia | 1:00.04 | |
59 | 3 | 9 | Cabrera, LaniLani Cabrera | Barbados | 1:00.75 | |
60 | 2 | 1 | Tumiotto, SoniaSonia Tumiotto | Tanzânia | 1:09.00 | |
61 | 3 | 6 | Nóbrega, Ana SofiaAna Sofia Nóbrega | Angola | 1:00.92 | |
1 | 6 | Enkhkhuslen, BatbayarynBatbayaryn Enkhkhuslen | Mongólia | |
63 | 1 | 4 | Hernandez, GabrielaGabriela Hernandez | Nicarágua | 1:01.15 | |
64 | 3 | 0 | Boutbien, JeanneJeanne Boutbien | Senegal | 1:01.30 | |
65 | 1 | 8 | Park Mi-song | Coreia do Norte | 1:02.24 | |
66 | 2 | 5 | Charlemagne, MikailiMikaili Charlemagne | Santa Lúcia | 1:02.59 | |
67 | 2 | 4 | Pruthi, FlakaFlaka Pruthi | Kosovo | 1:03.81 | |
68 | 2 | 3 | Hepler, Ann-MarieAnn-Marie Hepler | Ilhas Marshall | 1:04.01 | |
69 | 2 | 8 | Shah, SofiaSofia Shah | Nepal | 1:04.83 | |
70 | 2 | 6 | Mitchell, BiancaBianca Mitchell | Antígua e Barbuda | 1:05.06 | |
71 | 2 | 2 | Gomez, MineriMineri Gomez | Guam | 1:05.09 | |
72 | 2 | 7 | Panuve, CharissaCharissa Panuve | Tonga | 1:05.47 | |
73 | 2 | 0 | Tyurina, AnastasiyaAnastasiya Tyurina | Tajiquistão | 1:09.14 | |
74 | 1 | 1 | Shajan, AminathAminath Shajan | Maldivas | 1:10.17 | |
75 | 2 | 9 | Chang'anamuno, TayamikaTayamika Chang'anamuno | Malawi | 1:10.84 | |
76 | 1 | 5 | Thompson, Jin JuJin Ju Thompson | Marianas Setentrionais | 1:12.07 | |
77 | 1 | 7 | Uwase, LidwineLidwine Uwase | Ruanda | 1:16.00 | |
78 | 1 | 0 | Ximenes Belo, ImeldaImelda Ximenes Belo | Timor-Leste | 1:19.52 | |
— | 1 | 9 | Irankunda, LenaLena Irankunda | Burundi | DNS |