Athletics at the 2015 Summer Universiade – Men's 400 metres

The men's 400 metres event at the 2015 Summer Universiade was held on 8, 9 and 10 July at the Gwangju Universiade Main 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.