Swimming at the 2019 Pan American Games – Men's 100 metre breaststroke

The men's 100 metre breaststroke competition of the swimming events at the 2019 Pan American Games were held August 6th, 2019 at the Villa Deportiva Nacional Videna cluster.

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

Heats
The first round was held on August 6.

Final B
The B final was also held on August 6.

Final A
The A final was also held on August 6.