Athletics at the 2017 Summer Universiade – Men's 400 metres

The men's 400 metres event at the 2017 Summer Universiade was held on 23, 24 and 25 August at the Taipei Municipal Stadium.

Heats
Qualification: First 2 in each heat (Q) and next 6 fastest (q) qualified for the semifinals.

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