2016 IAAF World U20 Championships – Men's 4 × 400 metres relay

The men's 4 × 100 metres relay event at the 2016 IAAF World U20 Championships was held at Zdzisław Krzyszkowiak Stadium on 23 and 24 July.

Medalists
* Athletes who competed in heats only

Heats
Qualification: First 3 of each heat (Q) plus the 2 fastest times (q) qualified for the final.