The Girls' 400 metres at the 2017 World Youth Championships in Athletics was held on 12–14 July.
Medalists
edit| Gold | Silver | Bronze |
Records
editPrior to the competition, the following records were as follows.
| World Youth Best |  Li Jing (CHN)
|
50.01 | Shanghai, China | 18 October 1997 |
| Championship Record |  Nawal El Jack (SUD)
|
51.19 | Marrakech, Morocco | 15 July 2005 |
| World Youth Leading |  Arria Minor (USA)
|
52.05 | Sacramento, California, United States | 24 June 2017 |
Heats
editQualification rule: first 3 of each heat (Q) and the next 4 fastest qualified.[1]
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 2 | Doneisha Anderson |  Bahamas |
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| 1 | 3 | Bianca Georgiana Anton |  Romania |
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| 1 | 4 | Maryam Mohebbi |  Iran |
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| 1 | 5 | Hana Amsalu |  Ethiopia |
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| 1 | 6 | Niddy Mingilishi |  Zambia |
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| 1 | 7 | Elena Georgieva |  Bulgaria |
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| 2 | 2 | Giovana Rosalia dos Santos |  Brazil |
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| 2 | 3 | Mary Moraa |  Kenya |
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| 2 | 4 | Wendira Moss | Bahamas |
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| 2 | 5 | Katarina Sekulic |  Serbia |
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| 2 | 6 | Dandi Jyothika Sri |  India |
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| 2 | 7 | Aliya Boshnak |  Jordan |
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| 3 | 1 | Linda Philip Mamun | Athletes Refugee Team | |||
| 3 | 2 | Knowledga Omovoh |  Nigeria |
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| 3 | 3 | Milagros Durán |  Dominican Republic |
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| 3 | 4 | Liang Yina | China |
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| 3 | 5 | Naledi Lopang |  Botswana |
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| 3 | 6 | Maria Scrob | Romania |
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| 3 | 7 | Shaquena Foote |  Jamaica |
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| 4 | 2 | Maryana Shostak |  Ukraine |
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| 4 | 3 | Barbora Malíková |  Czech Republic |
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| 4 | 4 | Sharon Jebet | Kenya |
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| 4 | 5 | Uwemedino Akpan Abasiono | Nigeria |
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| 4 | 6 | Valery Montenegro |  Venezuela |
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| 4 | 7 | Laura Kaufmann |  Germany |
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| 4 | 8 | Johanna Bangala Ikabu |  Democratic Republic of the Congo |
Semifinals
editThis section is empty. You can help by adding to it. (March 2022) |
Final
editThis section is empty. You can help by adding to it. (March 2022) |