# Swimming at the 2018 Summer Youth Olympics – Girls' 100 metre freestyle

The girls' 100 metre freestyle event at the 2018 Summer Youth Olympics took place on 8 and 9 October at the Natatorium in Buenos Aires, Argentina.

## Results
### Heats

The heats were started on 8 October at 10:12.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 4 | Barbora Seemanová | Czech Republic | 55.15 | Q |
| 2 | 5 | 5 | Nagisa Ikemoto | Japan | 55.51 | Q |
| 3 | 5 | 3 | Neža Klančar | Slovenia | 55.59 | Q |
| 4 | 4 | 5 | Mayuka Yamamoto | Japan | 55.95 | Q |
| 5 | 4 | 4 | Elizaveta Klevanovich | Russia | 55.99 | Q |
| 6 | 6 | 5 | Abbey Webb | Australia | 56.10 | Q |
| 7 | 6 | 3 | Kyla Leibel | Canada | 56.21 | Q |
| 8 | 6 | 1 | Anastasia Gorbenko | Israel | 56.33 | Q |
| 9 | 6 | 4 | Yang Junxuan | China | 56.50 | Q |
| 10 | 4 | 3 | Ieva Maļuka | Latvia | 56.64 | Q |
| 11 | 3 | 4 | Anicka Delgado | Ecuador | 56.75 | Q |
| 12 | 4 | 2 | Kalia Antoniou | Cyprus | 56.76 | Q |
| 13 | 5 | 2 | Kate Douglass | United States | 56.80 | Q |
| 13 | 6 | 6 | Rafaela Raurich | Brazil | 56.80 | Q |
| 15 | 3 | 2 | Diana Petkova | Bulgaria | 56.83 | Q |
| 16 | 5 | 7 | Christie Chue | Singapore | 56.92 | Q |
| 17 | 5 | 6 | Julia Mrozinski | Germany | 56.97 | |
| 18 | 5 | 1 | Ana Vieira | Brazil | 57.00 | |
| 19 | 3 | 6 | Julieta Lema | Argentina | 57.07 | |
| 20 | 3 | 1 | Erika Fairweather | New Zealand | 57.16 | |
| 21 | 4 | 7 | Nea-Amanda Heinola | Finland | 57.22 | |
| 21 | 6 | 7 | Snæfríður Sól Jórunnardóttir | Iceland | 57.22 | |
| 23 | 3 | 5 | Leoni Richter | Switzerland | 57.27 | |
| 23 | 6 | 2 | Angelina Köhler | Germany | 57.27 | |
| 25 | 6 | 8 | Alena Semizhon | Belarus | 57.31 | |
| 26 | 3 | 8 | Nicole Oliva | Philippines | 57.33 | |
| 27 | 4 | 6 | Aleksa Gold | Estonia | 57.42 | |
| 28 | 5 | 8 | Kornelia Fiedkiewicz | Poland | 57.63 | |
| 29 | 4 | 8 | Tinky Ho | Hong Kong | 58.02 | |
| 30 | 4 | 1 | Andrea Santander | Venezuela | 58.24 | |
| 31 | 2 | 4 | Sara Junevik | Sweden | 58.42 | |
| 32 | 2 | 6 | Beatriz Padrón | Costa Rica | 58.66 | |
| 33 | 3 | 3 | Tamara Potocká | Slovakia | 58.69 | |
| 34 | 2 | 3 | Madelyn Moore | Bermuda | 58.81 | |
| 35 | 2 | 7 | Enjy Mohamed Abouzaid | Egypt | 58.86 | |
| 36 | 2 | 8 | Inés Marín | Chile | 58.98 | |
| 37 | 2 | 1 | Natalya Kritinina | Uzbekistan | 59.72 | |
| 38 | 3 | 7 | Karolina Jurczyk | Poland | 59.78 | |
| 39 | 2 | 5 | Emily MacDonald | Jamaica | 59.98 | |
| 40 | 2 | 2 | Maria Perez Garcia | Luxembourg | 1:00.60 | |
| 41 | 1 | 5 | Sonia Tumiotto | Tanzania | 1:01.47 | |
| 42 | 1 | 4 | Samantha Roberts | Antigua and Barbuda | 1:01.91 | |
| 43 | 1 | 2 | Aaliyah Palestrini | Seychelles | 1:03.07 | |
| 44 | 1 | 3 | Jadyn George | Guyana | 1:04.10 | |
| 45 | 1 | 6 | Robyn Young | Eswatini | 1:06.53 | |

### Semifinals

The semifinals were started on 8 October at 18:40.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Barbora Seemanová | Czech Republic | 54.61 | Q |
| 2 | 2 | 2 | Yang Junxuan | China | 54.79 | Q |
| 3 | 2 | 5 | Neža Klančar | Slovenia | 55.10 | Q |
| 4 | 1 | 4 | Nagisa Ikemoto | Japan | 55.25 | Q |
| 5 | 2 | 3 | Elizaveta Klevanovich | Russia | 55.34 | Q |
| 6 | 1 | 3 | Abbey Webb | Australia | 55.69 | Q |
| 7 | 2 | 6 | Kyla Leibel | Canada | 55.93 | Q |
| 8 | 1 | 6 | Anastasia Gorbenko | Israel | 56.21 | Q |
| 9 | 1 | 5 | Mayuka Yamamoto | Japan | 56.37 | |
| 10 | 1 | 7 | Kalia Antoniou | Cyprus | 56.63 | |
| 11 | 1 | 1 | Rafaela Raurich | Brazil | 56.64 | |
| 12 | 1 | 2 | Ieva Maļuka | Latvia | 56.65 | |
| 13 | 2 | 8 | Diana Petkova | Bulgaria | 56.82 | |
| 14 | 2 | 1 | Kate Douglass | United States | 57.15 | |
| 15 | 1 | 8 | Christie Chue | Singapore | 57.29 | |
| 16 | 2 | 7 | Anicka Delgado | Ecuador | 57.67 | |

### Final

The final was held on 9 October at 19:25.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Barbora Seemanová | Czech Republic | 54.19 | NR |
| | 5 | Yang Junxuan | China | 54.43 | |
| | 3 | Neža Klančar | Slovenia | 54.55 | NR |
| 4 | 6 | Nagisa Ikemoto | Japan | 55.37 | |
| 5 | 7 | Abbey Webb | Australia | 55.61 | |
| 6 | 2 | Elizaveta Klevanovich | Russia | 55.68 | |
| 7 | 8 | Anastasia Gorbenko | Israel | 55.88 | |
| 8 | 1 | Kyla Leibel | Canada | 56.16 | |