Swimming at the 2023 Pan American Games – Men's 4 × 100 metre freestyle relay

The men's 4 × 100 metre freestyle relay competition of the swimming events at the 2023 Pan American Games were held on October 21, 2023, at the Aquatic Center in Santiago, Chile.

Records
Prior to this competition, the existing world and Pan American Games records were as follows:

Heats
The first round was held on October 21.

Final
The final was also held on October 21.