Swimming at the 1999 Pan American Games – Women's 400 metre freestyle

The women's 400 metre freestyle competition of the swimming events at the 1999 Pan American Games took place on 4 August at the Pan Am Pool. The last Pan American Games champion was Brooke Bennett of US.

This race consisted of eight lengths of the pool, with all eight being in the freestyle stroke.

Results
All times are in minutes and seconds.

Heats
The first round was held on August 4.

B Final
The B final was held on August 4.

A Final
The A final was held on August 4.