| Date | 18 August 2014 — 10:15 | |
|---|---|---|
| Location | Nanjing Olympic Sports Centre Natatorium, Nanjing Olympic Sports Centre, Jiangning, Nanjing | |
| Format | Fastest 16 swimmers to semi-finals. | |
| Time | 10:15 |
|---|
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Dana Kolidzeja |  LAT | 1:13.79 | ||
| 2 | Carolina di Lorenzi |  URU | 1:16.03 | ||
| 3 | Carmen Guerra |  NCA | 1:18.09 | ||
| 4 | Gabriella John |  ANT | 1:19.65 | ||
| 5 | Barbara Vali-Skelton |  PNG | 1:20.25 |
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Anastasiya Maliavina |  UKR | 1:08.91 | ||
| 2 | Yang Ji-Won |  KOR | 1:10.96 | ||
| 3 | Samantha Yeo |  SGP | 1:11.98 | ||
| 4 | Jessica Billquist |  SWE | 1:12.06 | ||
| 5 | Ella Bond |  AUS | 1:12.07 | ||
| 6 | Dearbhail McNamara |  IRL | 1:13.79 | ||
| 7 | Theresa Banzer |  LIE | 1:14.26 | ||
| 8 | Chloé Cazier |  FRA | 1:14.46 |
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Silja Kansakoski |  FIN | 1:09.23 | ||
| 2 | He Yun |  CHN | 1:09.51 | ||
| 3 | Georgina Evans |  GBR | 1:09.59 | ||
| 4 | Alina Zmushka |  BLR | 1:10.81 | ||
| 5 | Sophie Hansson | SWE | 1:11.32 | ||
| 6 | Justine MacFarlane |  RSA | 1:11.37 | ||
| 7 | Karleen Kersa |  EST | 1:13.04 | ||
| 8 | Jamie Yeung |  HKG | 1:13.46 |
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Rūta Meilutytė |  LTU | 1:08.97 | ||
| 2 | Anna Sztankovics |  HUN | 1:09.68 | ||
| 3 | Julia Willers |  GER | 1:10.16 | ||
| =4 | Dalma Sebestyén | HUN | 1:10.44 | ||
| =4 | Lisa Mamié |  SUI | 1:10.44 | ||
| 6 | Dominika Sztandera |  POL | 1:10.73 | ||
| 7 | Kelsey Wog |  CAN | 1:11.67 | ||
| 8 | Florina Ilie |  ROU | 1:12.26 |
