Swimming at the 1999 Pan American Games – Women's 4 × 100 metre freestyle relay
# Swimming at the 1999 Pan American Games – Women's 4 × 100 metre freestyle relay

The women's 4 × 100 metre freestyle relay competition of the swimming events at the 1999 Pan American Games took place on August 4 at the Pan Am Pool. The last Pan American Games champion was the United States.

This race consisted of eight lengths of the pool. Each of the four swimmers completed two lengths of the pool. The first swimmer had to touch the wall before the second could leave the starting block.

## Results

All times are in minutes and seconds.

| KEY: | q | Fastest non-qualifiers | Q | Qualified | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best |
| - | - | - | - | - | - | - | - | - | - | - | - | - |

### Final

The final was held on August 4.

| Rank | Name | Nationality | Time |
| - | - | - | - |
| | Jessica Deglau Marianne Limpert Sarah Evanetz Laura Nicholls | Canada | 3:45.07 |
| | Tammie Spatz Courtney Shealy Stefanie Williams Jen Eberwien | United States | 3:45.72 |
| | Juliana Machado Rebeca Gusmão Flávia Delaroli Tatiana Lemos | Brazil | 3:50.37 |
| 4 | Tamara Swaby Jevon Atkinson Angela Chuck Janelle Atkinson | Jamaica | 4:04.76 |
| 5 | - - - - | - | - |
| 6 | - - - - | - | - |
| 7 | - - - - | - | - |
| 8 | - - - - | - | - |
