| Final 08.08 Night | time | gap | L | React. |  50m |  | 1. Katinka Hosszu |  HUN | 58.45s | 5 | 0.70 | 28.84s | 7. |  | 2. Kathleen Baker |  USA | 58.75s | 0.30 | 4 | 0.62 | 28.28s | 3. |  | 3. Kylie Masse |  CAN | 58.76s | 0.31 | 2 | 0.56 | 28.56s | 5. |  | 3. Yuanhui Fu |  CHN | 58.76s | 0.31 | 3 | 0.59 | 28.34s | 4. |  | 5. Mie Oe Nielsen |  DEN | 58.80s | 0.35 | 7 | 0.64 | 28.83s | 6. |  | 6. Olivia Smoliga |  USA | 58.95s | 0.50 | 8 | 0.83 | 29.19s | 1. |  | 7. Emily Seebohm |  AUS | 59.19s | 0.74 | 1 | 0.74 | 28.23s | 2. |  | 8. Madison Wilson |  AUS | 59.23s | 0.78 | 6 | 0.58 | 28.89s | 8. |   
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| Ranking | time | gap | React | 50m | HR | Semi |  | 1. Kathleen Baker |  USA | 58.84s |   | 0.63 | 28.48s | 1. | 2  |  | 2. Katinka Hosszu |  HUN | 58.94s | 0.10 | 0.59 | 28.64s | 2. | 2  |  | 3. Yuanhui Fu |  CHN | 58.95s | 0.11 | 0.58 | 28.77s | 3. | 2  |  | 4. Madison Wilson |  AUS | 59.03s | 0.19 | 0.58 | 28.82s | 1. | 1  |  | 5. Kylie Masse |  CAN | 59.06s | 0.22 | 0.64 | 28.66s | 4. | 2  |  | 6. Mie Oe Nielsen |  DEN | 59.18s | 0.34 | 0.67 | 29.07s | 2. | 1  |  | 7. Emily Seebohm |  AUS | 59.32s | 0.48 | 0.71 | 28.75s | 3. | 1  |  | 8. Olivia Smoliga |  USA | 59.35s | 0.51 | 0.69 | 28.81s | 4. | 1  |  |  eliminated |  | 9. Anastasiia Fesikova |  RUS | 59.68s | 0.84 | 0.70 | 28.86s | 5. | 1  |  | 10.Georgia Davies |  GBR | 59.85s | 1.01 | 0.61 | 29.11s | 5. | 2  |  |  below Olympic Qualifyng Time 1:00.25. |  | 11.Kirsty Coventry |  ZIM | 1:00.26 | 1.42 | 0.64 | 29.51s | 6. | 2  |  | 12.Dominique Bouchard |  CAN | 1:00.54 | 1.70 | 0.66 | 29.89s | 6. | 1  |  | 13.Matea Samardzic |  CRO | 1:00.60 | 1.76 | 0.76 | 29.24s | 7. | 2  |  | 14.Eyglo Osk Gustafsdottir |  ISL | 1:00.65 | 1.81 | 0.77 | 29.56s | 7. | 1  |  | 15.Duane da Rocha |  ESP | 1:00.85 | 2.01 | 0.65 | 29.72s | 8. | 2  |  | 16.Xueer Wang |  CHN | 1:01.44 | 2.60 | 0.67 | 29.32s | 8. | 1  |   
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| Ranking | time | gap | React | 50m | HR |  | 1. Kathleen Baker |  USA | 58.84s |   | 0.61 | 28.29s | 1. |  | 2. Emily Seebohm |  AUS | 58.99s | 0.15 | 0.69 | 28.77s | 1. |  | 3. Kylie Masse |  CAN | 59.07s | 0.23 | 0.63 | 28.46s | 2. |  | 4. Katinka Hosszu |  HUN | 59.13s | 0.29 | 0.58 | 29.01s | 3. |  | 4. Mie Oe Nielsen |  DEN | 59.13s | 0.29 | 0.66 | 29.08s | 2. |  | 6. Olivia Smoliga |  USA | 59.60s | 0.76 | 0.75 | 28.94s | 1. |  | 7. Georgia Davies |  GBR | 59.86s | 1.02 | 0.62 | 29.44s | 3. |  | 8. Madison Wilson |  AUS | 59.92s | 1.08 | 0.64 | 29.33s | 2. |  | 9. Yuanhui Fu |  CHN | 1:00.02 | 1.18 | 0.71 | 28.89s | 4. |  | 10.Anastasiia Fesikova |  RUS | 1:00.04 | 1.20 | 0.78 | 29.10s | 3. |  | 11.Kirsty Coventry |  ZIM | 1:00.13 | 1.29 | 0.68 | 29.39s | 4. |  | 12.Dominique Bouchard |  CAN | 1:00.18 | 1.34 | 0.63 | 29.53s | 4. |  |  below Olympic Qualifyng Time 1:00.25. |  | 13.Matea Samardzic |  CRO | 1:00.46 | 1.62 | 0.79 | 29.71s | 5. |  | 14.Xueer Wang |  CHN | 1:00.59 | 1.75 | 0.66 | 29.07s | 6. |  | 15.Duane da Rocha |  ESP | 1:00.87 | 2.03 | 0.75 | 29.37s | 7. |  | 16.Eyglo Osk Gustafsdottir |  ISL | 1:00.89 | 2.05 | 0.65 | 29.93s | 5. |  |  eliminated |  | 17.Simona Baumrtova |  CZE | 1:01.08 | 2.24 | 0.68 | 29.94s | 6. |  | 18.Kira Toussaint |  NED | 1:01.17 | 2.33 | 0.58 | 29.19s | 5. |  | 19.Yin Yan Claudia Lau |  HKG | 1:01.27 | 2.43 | 0.60 | 29.81s | 1. |  | 20.Yekaterina Rudenko |  KAZ | 1:01.28 | 2.44 | 0.77 | 29.71s | 6. |  | 21.Alicja Tchorz |  POL | 1:01.31 | 2.47 | 0.63 | 29.55s | 2. |  | 22.Katarina Listopadova |  SVK | 1:01.43 | 2.59 | 0.65 | 30.28s | 8. |  | 23.Daria K Ustinova |  RUS | 1:01.45 | 2.61 | 0.66 | 29.83s | 7. |  | 24.Mimosa Jallow |  FIN | 1:01.58 | 2.74 | 0.68 | 29.60s | 8. |  | 25.Etiene Medeiros |  BRA | 1:01.70 | 2.86 | 0.62 | 29.44s | 7. |  | 26.Natsumi Sakai |  JPN | 1:01.74 | 2.90 | 0.59 | 29.99s | 8. |  |  below Olympic Selection Time (OST) 1:02.36. |  | 27.Alexus Laird |  SEY | 1:03.33 | 4.49 | 0.59 | 29.58s | 3. |  | 28.Kimiko Raheem |  SRI | 1:04.21 | 5.37 | 0.59 | 29.58s | 3. |  | 29.Lara Butler |  CAY | 1:04.98 | 6.14 | 0.59 | 29.58s | 3. |  | 30.Caylee Watson |  ISV | 1:07.19 | 8.35 | 0.59 | 29.58s | 3. |  | 31.Gaurika Singh |  NEP | 1:08.45 | 9.61 | 0.59 | 29.58s | 3. |  | 32.Evelina Afoa |  SAM | 1:08.74 | 9.90 | 0.59 | 29.58s | 3. |  | 33.Talisa Lanoe |  KEN | 1:10.02 | 11.18 | 0.59 | 29.58s | 3. |  | 34.Rita Zeqiri |  KOS | 1:12.31 | 13.47 | 0.59 | 29.58s | 3. |   
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| Olympic Qualifyng Time (OQT) 1:00.25 - NOC can enter up to 2 swimmers with OQT. |  | Olympic Selection Time (OST) 1:02.36, invitantional - A swwimer meeting the "invitation" standard was eligible for entry. But this entry was allotted/filled by ranking.  |   
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|  Olympic Qualifyng Time by NOC - 20 Swimmers - additional 16 swimmers. |  |  Olympic Qualifying Time – 1:00.25 |  |  2 Quotas - 5 NOC |  | 2 |  Australia | Emily Seebohm | Madison Wilson |  | 2 |  Canada | Dominique Bouchard | Kylie Masse |  | 2 |  China | Fu Yuanhui | Wang Xueer |  | 2 |  Russia | Anastasia Fesikova | Daria Ustinova |  | 2 |  United_States | Kathleen Baker | Olivia Smoliga |  |  1 Quota - 10 NOC |  | 1 |  Brazil | Etiene Medeiros |  | 1 |  Denmark | Mie Nielsen |  | 1 |  Great_Britain | Georgia Davies |  | 1 |  Hungary | Katinka Hosszú |  | 1 |  Iceland | Eygló Ósk Gústafsdóttir |  | 1 |  Japan | Natsumi Sakai |  | 1 |  Netherlands | Kira Toussaint |  | 1 |  Slovakia | Katarína Listopadová |  | 1 |  Ukraine | Daryna Zevina |  | 1 |  Zimbabwe | Kirsty Coventry |  |  Olympic Selection Time – 1.02.36 - 9 NOC |  | 1 |  Croatia | Matea Samardžić | [a] |  | 1 |  Finland | Mimosa Jallow |  | 1 |  Hong Kong | Claudia Lau | [a] |  | 1 |  Israel | Andrea Murez | [a] |  | 1 |  Kazakhstan | Yekaterina Rudenko | [b] |  | 1 |  Poland | Alicja Tchorz | [a] |  | 1 |  Seychelles | Alexus Laird | [b] |  | 1 |  Spain | Duane da Rocha | [a] |  | 1 |  Sweden | Michelle Coleman | [a] |  |  Universalitiy Places - 7 NOC |  | 1 |  Cayman Islands | Lara Butler |  | 1 |  Kenya | Talisa Lenoe |  | 1 |  Kosovo | Rita Zeqiri |  | 1 |  Nepal | Gaurika Singh |  | 1 |  Samoa | Evelina Afoa |  | 1 |  Sri Lanka | Kimiko Raheem |  | 1 |  Virgin Islands | Caylee Watson |  | 36 | Total |   
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