Swimming at the 1955 Pan American Games – Women's 100 metre butterfly

The women's 100 metre butterfly competition of the swimming events at the 1955 Pan American Games took place on 25 March. It was the first appearance of this event in the Pan American Games.

This race consisted of two lengths of the pool, all in butterfly.

Results
All times are in minutes and seconds.

Final
The final was held on March 25.