# Swimming at the 2011 World Aquatics Championships – Women's 4 × 100 metre freestyle relay

The women's 4×100 metre freestyle relay competition of the swimming events at the 2011 World Aquatics Championships took place July 24. The heats and final took place July 24.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record Championship record | Inge Dekker (53.61) Ranomi Kromowidjojo (52.30) Femke Heemskerk (53.03) Marleen Veldhuis (52.78) | Netherlands | 3:31.72 | Rome | July 26, 2009 |

## Results
### Heats

14 teams participated in 2 heats, qualified teams are listed:
| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 2 | 4 | United States | Amanda Weir (54.35) Missy Franklin (53.57) Kara Lynn Joyce (54.10) Jessica Hardy (53.62) | 3:35.64 | Q |
| 2 | 1 | 2 | Netherlands | Marleen Veldhuis (54.41) Ranomi Kromowidjojo (53.66) Maud Van der Meer (54.70) Femke Heemskerk (52.99) | 3:35.76 | Q |
| 3 | 2 | 5 | China | Li Zhesi (54.47) Wang Shijia (54.60) Pang Jiaying (54.47) Tang Yi (53.60) | 3:37.14 | Q |
| 4 | 1 | 5 | Germany | Britta Steffen (54.86) Silke Lippok (54.23) Lisa Vitting (54.66) Daniela Schreiber (53.53) | 3:37.28 | Q |
| 5 | 1 | 4 | Australia | Kelly Stubbins (54.96) Merindah Dingjan (54.36) Yolane Kukla (55.06) Marieke Guehrer (53.97) | 3:38.35 | Q |
| 6 | 1 | 3 | Canada | Victoria Poon (54.79) Erica Morningstar (55.24) Chantal van Landeghem (54.33) Geneviève Saumur (54.44) | 3:38.80 | Q |
| 7 | 2 | 3 | Japan | Yayoi Matsumoto (54.82) Haruka Ueda (54.13) Hanae Ito (54.75) Natsuki Hasegawa (55.58) | 3:39.28 | Q |
| 8 | 1 | 7 | Denmark | Pernille Blume (54.82) Mie Nielsen (55.35) Lotte Friis (55.99) Jeanette Ottesen (53.32) | 3:39.48 | Q, NR |
| 9 | 2 | 6 | Great Britain | Amy Smith (54.98) Francesca Halsall (53.35) Caitlin McClatchey (55.82) Rebecca Turner (55.59) | 3:39.74 | |
| 10 | 1 | 6 | Sweden | Ida Marko-Varga (55.45) Gabriella Fagundez (54.31) Michelle Coleman (54.56) Petra Granlund (56.13) | 3:40.45 | |
| 11 | 2 | 2 | Russia | Veronika Popova (54.95) Margarita Nesterova (55.12) Natalya Lovtsova (55.83) Elena Sokolova (54.83) | 3:40.73 | |
| 12 | 2 | 7 | Belarus | Aleksandra Gerasimenya (54.14) Sviatlana Khakhlova (55.55) Yana Parakhouskaya (57.38) Yulia Khitraya (56.34) | 3:43.41 | |
| 13 | 2 | 8 | Brazil | Tatiana Lemos (55.68) Daynara de Paula (56.38) Flávia Delaroli (56.73) Michelle Lenhardt (55.83) | 3:44.62 | |
| 14 | 2 | 1 | New Zealand | Natasha Hind (55.49) Amaka Gessler (55.00) Sophia Batchelor (58.82) Penelope May Marshall (55.68) | 3:44.99 | |

### Final

The final was held at 19:10.
| Rank | Lane | Nation | Swimmers | Time |
| | 5 | Netherlands | Inge Dekker (54.91) Ranomi Kromowidjojo (53.26) Marleen Veldhuis (53.33) Femke Heemskerk (52.46) | 3:33.96 |
| | 4 | United States | Natalie Coughlin (54.09) Missy Franklin (52.99) Jessica Hardy (54.12) Dana Vollmer (53.27) | 3:34.47 |
| | 6 | Germany | Britta Steffen (54.51) Silke Lippok (54.17) Lisa Vitting (53.85) Daniela Schreiber (53.12) | 3:36.05 |
| 4 | 3 | China | Li Zhesi (54.35) Wang Shijia (54.53) Pang Jiaying (54.36) Tang Yi (53.12) | 3:36.36 |
| 5 | 2 | Australia | Bronte Barratt (54.81) Marieke Guehrer (54.37) Merindah Dingjan (54.14) Alicia Coutts (53.43) | 3:36.75 |
| 6 | 7 | Canada | Victoria Poon (54.74) Geneviève Saumur (55.47) Chantal van Landeghem (53.76) Julia Wilkinson (54.45) | 3:38.42 |
| 7 | 1 | Japan | Haruka Ueda (54.98) Yayoi Matsumoto (54.00) Hanae Ito (54.94) Natsuki Hasegawa (55.63) | 3:39.55 |
| 8 | 8 | Denmark | Pernille Blume (54.63) Mie Nielsen (55.23) Jeanette Ottesen (53.76) Lotte Friis (56.12) | 3:39.74 |