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

| Rank_ | Name_ | Nationality | Time_ | Notes_ |
|---|---|---|---|---|
| 1 | Janelle Atkinson | Jamaica | 4:16.89 | Q |
| 2 | - | - | - | Q |
| 3 | Kaitlin Sandeno | United States | 4:18.97 | Q |
| 4 | Julia Stowers | United States | 4:19.84 | Q |
| 5 | - | - | - | Q |
| 6 | - | - | - | Q |
| 7 | - | - | - | Q |
| 8 | - | - | - | Q |