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

The men's 100 metre backstroke competition of the swimming events at the 2023 Pan American Games were held on October 23, 2023, at the Aquatic Center in Santiago, Chile.

Heats
The first round was held on October 23.

Final B
The B final was also held on October 23.

Final A
The A final was also held on October 23.