Athletics at the 1999 Pan American Games – Men's 4 × 400 metres relay

The men's 4 × 400 metres relay event at the 1999 Pan American Games was held July 28–30.

Medalists
* Athletes who competed in heats only

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