The women's 400 metres hurdles at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 2, 3 and 4 August 2022.
Records.
U20 standing records prior to the 2022 World Athletics U20 Championships were as follows:
Results.
Round 1.
Qualification: First 3 of each heat (Q) and the 6 fastest times (q) qualified for the semifinals.
Semifinals.
Qualification: First 2 of each heat (Q) and the 2 fastest times (q) qualified for the final.
Final.
The final was held on 4 August at 17:14
References.
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