2017 European Athletics U23 Championships – Women's 400 metres

The women's 400 metres event at the 2017 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zdzisław Krzyszkowiak Stadium on 14 and 15 July.

Heats
14 July

Qualification rule: First 2 (Q) and the next 2 fastest (q) qualified for the final.

Final
15 July