| Event: | Girls' 100 metres |
| Games: | 2018 Summer Youth |
| Venue: | Parque Polideportivo Roca |
| Date: | 12 October and 15 October 2018 |
| Competitors: | 42 |
| Nations: | 42 |
| Gold: | Rosemary Chukuma |
| Goldnoc: | NGR |
| Silver: | Julien Alfred |
| Silvernoc: | LCA |
| Bronze: | Gabriela Anahí Suárez |
| Bronzenoc: | ECU |
| Prev: | 2014 |
| Next: | 2026 |
The girls' 100 metres competition at the 2018 Summer Youth Olympics was held on 12 and 15 October, at the Parque Polideportivo Roca.
All times are in local time (UTC-3).
| Date | Time | Round | ||||
|---|---|---|---|---|---|---|
| 12 October 2018 | 16:30 | Stage 1 | ||||
| style=background:lemonchiffon | 15 October 2018 | style=background:lemonchiffon | 16:05 | style=background:lemonchiffon | Stage 2 |
| Rank | Heat | Lane | Athlete | Nation | Result | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 4 | 4 | Gabriela Anahí Suárez | 11.97 | QH5 | ||
| 2 | 5 | 8 | Julien Alfred | 11.99 | QH5 | ||
| 3 | 3 | 8 | Rosemary Chukuma | 12.03 | QH5 | ||
| 4 | 4 | 7 | Boglárka Takács | 12.08 | QH5 | ||
| 5 | 2 | 5 | Mariam Sire Oularé | 12.09 | QH5 | ||
| 6 | 1 | 2 | Pamera Losange | 12.13 | QH5 | ||
| 7 | 2 | 3 | Takako Niisaka | 12.22 | QH5 | ||
| 8 | 1 | 7 | Mélissa Gutschmidt | 12.27 | QH5 | ||
| 9 | 3 | 4 | Vitoria Pereira Jardim | 12.28 | QH4 | ||
| 10 | 1 | 9 | Beauty Somuah | 12.32 | QH4 | ||
| 11 | 5 | 2 | Shary Vallecilla | 12.34 | QH4 | ||
| 12 | 4 | 5 | Johanna Kylmanen | 12.34 | QH4 | ||
| 13 | 2 | 6 | Orangy Jiménez | 12.41 | QH4 | ||
| 14 | 1 | 8 | Tereza Marková | 12.44 | QH4 | ||
| 15 | 3 | 2 | Beatriz Andrade | 12.46 | QH4 | ||
| 16 | 5 | 5 | Soniya Jones | 12.48 | QH4 | ||
| 17 | 2 | 8 | Anais Valentina Hernández Alegria | 12.48 | QH4 | ||
| 18 | 3 | 6 | Fakhriyya Taghizade | 12.50 | QH3 | ||
| 19 | 3 | 9 | Alejandra Paulina Ortiz Hernández | 12.52 | QH3 | ||
| 20 | 4 | 6 | Donna Ntambue | 12.58 | QH3 | ||
| 21 | 5 | 7 | Laura Pintiel | 12.61 | QH3 | ||
| 22 | 1 | 5 | Maty Diop | 12.69 | QH3 | ||
| 23 | 5 | 4 | Lenka Kovačovičová | 12.70 | QH3 | ||
| 24 | 2 | 1 | Adriana Almeida | 12.89 | QH3 | ||
| 25 | 2 | 7 | Charlotte Afriat | 13.00 | QH3 | ||
| 26 | 4 | 2 | Nora Ķigure | 13.14 | QH3 | ||
| 27 | 5 | 6 | Danneika Lyn | 13.15 | QH2 | ||
| 28 | 3 | 5 | Edzinadia Ceita | 13.45 | QH2 | ||
| 29 | 3 | 7 | Marwa Alajooz | 13.60 | QH2, | ||
| 30 | 2 | 2 | Érica Mouwangui | 13.76 | QH2, | ||
| 31 | 3 | 3 | Jarencia Jeffers | 13.83 | QH2 | ||
| 32 | 2 | 4 | Famata Darame | 14.02 | QH2 | ||
| 33 | 1 | 1 | Melanie Ribauw | 14.05 | QH2 | ||
| 34 | 1 | 4 | Princess Dunah | 14.37 | QH2 | ||
| 35 | 4 | 8 | Youssouf Said Moina Rouzouna | 14.58 | QH1 | ||
| 36 | 4 | 3 | Raghad Habib Bu Arish | 14.68 | QH1 | ||
| 37 | 3 | 1 | Kanisleen Peter Michael | 14.71 | QH1 | ||
| 38 | 4 | 1 | Jein Kiden Clement Morgan | 14.84 | QH1 | ||
| 39 | 5 | 3 | Darina McDermott | 14.87 | QH1 | ||
| 40 | 5 | 1 | Nazi Yari | 17.43 | QH1 | ||
| 41 | 1 | 6 | Aminetou Fall | 18.02 | QH1 | ||
| 42 | 1 | 3 | Nuha Ahmed Ali Al-Ahdal | 18.37 | QH1 |
| Rank | Heat | Lane | Athlete | Nation | Result | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 5 | 5 | Rosemary Chukuma | 11.17 | |||
| 2 | 5 | 4 | Julien Alfred | 11.23 | |||
| 3 | 5 | 6 | Gabriela Anahí Suárez | 11.29 | |||
| 4 | 5 | 3 | Boglárka Takács | 11.45 | |||
| 5 | 5 | 8 | Pamera Losange | 11.52 | |||
| 6 | 5 | 7 | Mariam Sire Oularé | 11.57 | |||
| 7 | 5 | 1 | Mélissa Gutschmidt | 11.58 | |||
| 8 | 5 | 2 | Takako Niisaka | 11.65 | |||
| 9 | 4 | 5 | Beauty Somuah | 11.74 | |||
| 10 | 3 | 5 | Alejandra Paulina Ortiz Hernández | 11.82 | |||
| 11 | 4 | 6 | Vitoria Pereira Jardim | 11.86 | |||
| 12 | 4 | 7 | Johanna Kylmanen | 11.91 | |||
| 13 | 4 | 4 | Shary Vallecilla | 11.91 | |||
| 14 | 4 | 9 | Orangy Jiménez | 11.91 | |||
| 15 | 4 | 3 | Beatriz Andrade | 12.06 | |||
| 16 | 4 | 1 | Anais Valentina Hernández Alegria | 12.06 | |||
| 17 | 3 | 7 | Fakhriyya Taghizade | 12.08 | |||
| 18 | 3 | 4 | Donna Ntambue | 12.10 | |||
| 19 | 3 | 6 | Laura Pintiel | 12.12 | |||
| 20 | 4 | 8 | Tereza Marková | 12.13 | |||
| 21 | 4 | 2 | Soniya Jones | 12.14 | |||
| 22 | 3 | 9 | Lenka Kovačovičová | 12.18 | |||
| 23 | 3 | 8 | Maty Diop | 12.25 | |||
| 24 | 3 | 1 | Charlotte Afriat | 12.44 | |||
| 25 | 3 | 3 | Nora Ķigure | 12.46 | |||
| 26 | 2 | 5 | Danneika Lyn | 12.71 | |||
| 27 | 2 | 3 | Edzinadia Ceita | 12.85 | |||
| 28 | 2 | 6 | Marwa Alajooz | 13.18 | |||
| 29 | 2 | 4 | Érica Mouwangui | 13.21 | |||
| 30 | 2 | 8 | Jarencia Jeffers | 13.29 | |||
| 31 | 2 | 1 | Melanie Ribauw | 13.47 | |||
| 32 | 2 | 2 | Princess Dunah | 13.67 | |||
| 33 | 1 | 3 | Raghad Habib Bu Arish | 13.69 | |||
| 34 | 2 | 7 | Famata Darame | 13.81 | |||
| 35 | 1 | 6 | Jein Kiden Clement Morgan | 13.84 | |||
| 36 | 1 | 4 | Kanisleen Peter Michael | 14.09 | |||
| 37 | 1 | 7 | Darina McDermott | 14.19 | |||
| 38 | 1 | 1 | Nuha Ahmed Ali Al-Ahdal | 17.56 | |||
| 3 | 2 | Adriana Almeida | |||||
| 1 | 2 | Aminetou Fall | |||||
| 1 | 5 | Youssouf Said Moina Rouzouna | |||||
| 1 | 8 | Nazi Yari |
| Rank | Athlete | Nation | Stage 1 | Stage 2 | Total | |
|---|---|---|---|---|---|---|
| Rosemary Chukuma | 12.03 | 11.17 | 23.20 | |||
| Julien Alfred | 11.99 | 11.23 | 23.22 | |||
| Gabriela Anahí Suárez | 11.97 | 11.29 | 23.26 | |||
| Boglárka Takács | 12.08 | 11.45 | 23.53 | |||
| Pamera Losange | 12.13 | 11.52 | 23.65 | |||
| Mariam Sire Oularé | 12.09 | 11.57 | 23.66 | |||
| Mélissa Gutschmidt | 12.27 | 11.58 | 23.85 | |||
| Takako Niisaka | 12.22 | 11.65 | 23.87 | |||
| Beauty Somuah | 12.32 | 11.74 | 24.06 | |||
| 10 | Vitoria Pereira Jardim | 12.28 | 11.86 | 24.14 | ||
| 11 | Johanna Kylmanen | 12.34 | 11.91 | 24.25 | ||
| 11 | Shary Vallecilla | 12.34 | 11.91 | 24.25 | ||
| 13 | Orangy Jiménez | 12.41 | 11.91 | 24.32 | ||
| 14 | Alejandra Paulina Ortiz Hernández | 12.52 | 11.82 | 24.34 | ||
| 15 | Beatriz Andrade | 12.46 | 12.06 | 24.52 | ||
| 16 | Anais Valentina Hernández Alegria | 12.48 | 12.06 | 24.54 | ||
| 17 | Tereza Marková | 12.44 | 12.13 | 24.57 | ||
| 18 | Fakhriyya Taghizade | 12.50 | 12.08 | 24.58 | ||
| 19 | Soniya Jones | 12.48 | 12.14 | 24.62 | ||
| 20 | Donna Ntambue | 12.58 | 12.10 | 24.68 | ||
| 21 | Laura Pintiel | 12.61 | 12.12 | 24.73 | ||
| 22 | Lenka Kovačovičová | 12.70 | 12.18 | 24.88 | ||
| 23 | Maty Diop | 12.69 | 12.25 | 24.94 | ||
| 24 | Charlotte Afriat | 13.00 | 12.44 | 25.44 | ||
| 25 | Nora Ķigure | 13.14 | 12.46 | 25.60 | ||
| 26 | Danneika Lyn | 13.15 | 12.71 | 25.86 | ||
| 27 | Edzinadia Ceita | 13.45 | 12.85 | 26.30 | ||
| 28 | Marwa Alajooz | 13.60 | 13.18 | 26.78 | ||
| 29 | Érica Mouwangui | 13.76 | 13.21 | 26.97 | ||
| 30 | Jarencia Jeffers | 13.83 | 13.29 | 27.12 | ||
| 31 | Melanie Ribauw | 14.05 | 13.47 | 27.52 | ||
| 32 | Famata Darame | 14.02 | 13.81 | 27.83 | ||
| 33 | Princess Dunah | 14.37 | 13.67 | 28.04 | ||
| 34 | Raghad Habib Bu Arish | 14.68 | 13.69 | 28.37 | ||
| 35 | Jein Kiden Clement Morgan | 14.84 | 13.84 | 28.68 | ||
| 36 | Kanisleen Peter Michael | 14.71 | 14.09 | 28.80 | ||
| 37 | Darina McDermott | 14.87 | 14.19 | 29.06 | ||
| 38 | Nuha Ahmed Ali Al-Ahdal | 18.37 | 17.56 | 35.93 | ||
| Adriana Almeida | 12.89 | |||||
| Youssouf Said Moina Rouzouna | 14.58 | |||||
| Nazi Yari | 17.43 | |||||
| Aminetou Fall | 18.02 |