2019 European Athletics U23 Championships – Men's 400 metres hurdles

The men's 400 metres hurdles event at the 2019 European Athletics U23 Championships was held in Gävle, Sweden, at Gavlehov Stadium Park on 12, 13 and 14 July.

Heats
Qualification: First 3 in each heat (Q) and next 4 fastest (q) qualified for the semifinals.

Semifinals
Qualification: First 3 in each heat (Q) and next 2 fastest (q) qualified for the final.