Swimming at the 2008 Summer Olympics – Women's 100 metre freestyle Heats Heats

| Heat | Lane | Name_ | Nationality | Time_ |
|---|---|---|---|---|
| 6 | 3 | Hanna-Maria Seppälä | Finland | 53.60 |
| 6 | 4 | Britta Steffen | Germany | 53.67 |
| 6 | 5 | Marleen Veldhuis | Netherlands | 53.76 |
| 7 | 5 | Natalie Coughlin | United States | 53.82 |
| 5 | 6 | Francesca Halsall | Great Britain | 53.93 |
| 7 | 4 | Lisbeth Trickett | Australia | 53.99 |
| 6 | 6 | Pang Jiaying | China | 54.01 |
| 7 | 7 | Zhu Yingwen | China | 54.01 |
| 4 | 5 | Jeanette Ottesen | Denmark | 54.04 |
| 6 | 2 | Josefin Lillhage | Sweden | 54.07 |
| 7 | 3 | Malia Metella | France | 54.12 |
| 5 | 7 | Aliaksandra Herasimenia | Belarus | 54.52 |
| 5 | 4 | Cate Campbell | Australia | 54.55 |
| 5 | 3 | Lacey Nymeyer | United States | 54.62 |
| 7 | 6 | Erica Morningstar | Canada | 54.66 |
| 6 | 7 | Petra Dallmann | Germany | 54.70 |