The women's 400 metres hurdles event at the 2003 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zawisza Stadion on 18 and 19 July.
[1][2][3][4] 19 July 18 July Qualified: first 2 in each heat and 2 best to the Final According to an unofficial count, 19 athletes from 16 countries participated in the event.