Swimming at the 2023 Pan American Games – Men's 100 metre breaststroke

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

Heats
The first round was held on October 21.

Final B
The B final was also held on October 21.

Final A
The A final was also held on October 21.