The women's 100 metre freestyle competition of the swimming events at the 1971 Pan American Games took place on 11 August.

[1][2] The last Pan American Games champion was Erika Bricker of US.

[3][4][5][6][7][8] This race consisted of two lengths of the pool, both lengths being in freestyle.

[9] All times are in minutes and seconds.

The final was held on August 11.