The women's 100 metre breaststroke competition of the swimming events at the 1971 Pan American Games took place on 7 August 1971.
[1][2] The last Pan American Games champion was Catie Ball of US.
[3][4][5][6][7][8] This race consisted of two lengths of the pool, both lengths being in breaststroke.
[9] All times are in minutes and seconds.
The final was held on 7 August 1971.