Swimming at the 2000 Summer Olympics – Women's 100 metre freestyle Semifinal 1 Semifinal 1

| Rank_ | Lane | Name_ | Nationality | Time_ |
|---|---|---|---|---|
| 1 | 4 | Dara Torres | United States | 55.02 |
| 2 | 5 | Martina Moravcová | Slovakia | 55.06 |
| 3 | 2 | Wilma van Rijn | Netherlands | 55.28 |
| 4 | 3 | Therese Alshammar | Sweden | 55.31 |
| 5 | 6 | Sue Rolph | Great Britain | 55.69 |
| 6 | 7 | Sarah Ryan | Australia | 55.93 |
| 7 | 1 | Laura Nicholls | Canada | 55.94 |
| 8 | 8 | Alena Popchanka | Belarus | 56.40 |