# Athletics at the 2021 Summer World University Games – Women's 400 metres

The women's 400 metres event at the 2021 Summer World University Games was held on 1, 2 and 3 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.

## Medalists

| Gold | Silver | Bronze |
| Marlie Viljoen South Africa | Corrssia Perry United States | Barbora Malíková Czech Republic |

## Results
### Round 1

Qualification: First 3 in each heat (Q) and the next 4 fastest (q) advance to semifinal.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 2 | Corrssia Perry | United States | 53.53 | Q |
| 2 | 4 | Marlie Viljoen | South Africa | 53.53 | Q |
| 3 | 2 | Angelique Strydom | South Africa | 53.76 | Q |
| 4 | 4 | Aleksandra Formella | Poland | 53.89 | Q |
| 5 | 1 | Letícia Lima | Brazil | 54.90 | Q |
| 6 | 1 | Barbora Malíková | Czech Republic | 55.01 | Q |
| 7 | 3 | Karolina Łozowska | Poland | 55.08 | Q |
| 8 | 4 | Anny de Bassi | Brazil | 55.11 | Q |
| 9 | 4 | Ajda Kaučič | Slovenia | 55.15 | q |
| 10 | 3 | Anna Lange | Denmark | 55.31 | Q |
| 11 | 3 | Noémie Salamin | Switzerland | 55.34 | Q |
| 12 | 1 | Farida Solieva | Uzbekistan | 55.47 | Q |
| 13 | 2 | Lamiya Valiyeva | Azerbaijan | 55.48 | Q |
| 14 | 4 | Yang Hongfei | China | 55.65 | q |
| 15 | 2 | Golekanye Chikani | Botswana | 55.79 | q |
| 16 | 4 | Laura van der Veen | Norway | 55.93 | q |
| 17 | 3 | Motlatsi Rante | Botswana | 56.07 | |
| 18 | 3 | Douaa Ferdi | Algeria | 56.50 | |
| 19 | 2 | Rashdeep Kaur | India | 56.52 | |
| 20 | 1 | Jiang Yiran | China | 56.84 | |
| 21 | 3 | Fatoumata Baldé | Senegal | 57.02 | |
| 22 | 4 | Chelsea Bopulas | Malaysia | 57.05 | |
| 23 | 1 | Gayane Chiloyan | Armenia | 57.08 | SB |
| 24 | 1 | Rose Draru | Uganda | 1:01.17 | |
| 25 | 4 | Dorothy Abeja | Uganda | 1:01.82 | |
| 26 | 2 | Lyka Janer | Philippines | 1:07.16 | |
| 27 | 3 | Soudi-Thasmy Moussa | Comoros | 1:10.16 | |
| – | 1 | Djamila Zine | Algeria | DQ | TR17.4.3 |
| – | 1 | Neha Neha | India | DQ | TR17.4.3 |
| – | 2 | Lamia Al-Masfry | Oman | DQ | CR18.5 |
| – | 2 | Blessing Akintoye | Nigeria | DNS | |

### Semifinal

Qualification: First 3 in each heat (Q) and the next 2 fastest (q) advance to final.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 1 | Marlie Viljoen | South Africa | 52.98 | Q |
| 2 | 1 | Barbora Malíková | Czech Republic | 53.05 | Q |
| 3 | 2 | Corrssia Perry | United States | 53.23 | Q |
| 4 | 1 | Aleksandra Formella | Poland | 53.24 | Q |
| 5 | 2 | Karolina Łozowska | Poland | 53.26 | Q, PB |
| 6 | 2 | Anny de Bassi | Brazil | 53.29 | Q |
| 7 | 2 | Angelique Strydom | South Africa | 53.38 | q |
| 8 | 1 | Letícia Lima | Brazil | 53.97 | q |
| 9 | 1 | Farida Solieva | Uzbekistan | 53.98 | |
| 10 | 1 | Noémie Salamin | Switzerland | 54.38 | |
| 11 | 2 | Ajda Kaučič | Slovenia | 54.45 | |
| 12 | 2 | Anna Lange | Denmark | 54.81 | |
| 13 | 2 | Lamiya Valiyeva | Azerbaijan | 54.83 | NR |
| 14 | 1 | Yang Hongfei | China | 54.85 | PB |
| 15 | 1 | Golekanye Chikani | Botswana | 54.86 | |
| 16 | 2 | Laura van der Veen | Norway | 55.79 | |

### Final

| Rank | Name | Nationality | Time | Notes |
| | Marlie Viljoen | South Africa | 52.38 | |
| | Corrssia Perry | United States | 52.62 | PB |
| | Barbora Malíková | Czech Republic | 52.66 | |
| 4 | Aleksandra Formella | Poland | 53.01 | |
| 5 | Letícia Lima | Brazil | 53.04 | PB |
| 6 | Anny de Bassi | Brazil | 53.15 | PB |
| 7 | Karolina Łozowska | Poland | 53.18 | PB |
| 8 | Angelique Strydom | South Africa | 53.78 | |