Swimming at the 2008 Summer Olympics – Women's 100 metre breaststroke Semifinal 1 Semifinal 1

| Rank_ | Lane | Name_ | Nationality | Time_ |
|---|---|---|---|---|
| 1 | 5 | Rebecca Soni | United States | 1:07.07 |
| 2 | 4 | Yuliya Yefimova | Russia | 1:07.50 |
| 3 | 3 | Sun Ye | China | 1:07.72 |
| 4 | 6 | Joline Höstman | Sweden | 1:08.26 |
| 5 | 7 | Chen Huijia | China | 1:08.60 |
| 6 | 2 | Jillian Tyler | Canada | 1:09.00 |
| 7 | 8 | Elise Matthysen | Belgium | 1:09.00 |
| 8 | 1 | Kirsty Balfour | Great Britain | 1:09.23 |