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 Ranomi Kromowidjojo Femke Heemskerk Marleen Veldhuis | 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 | Amanda Weir Missy Franklin Kara Lynn Joyce Jessica Hardy | 3:35.64 | Q | |
| 2 | 1 | 2 | Marleen Veldhuis Ranomi Kromowidjojo Maud Van der Meer Femke Heemskerk | 3:35.76 | Q | |
| 3 | 2 | 5 | Li Zhesi Wang Shijia Pang Jiaying Tang Yi | 3:37.14 | Q | |
| 4 | 1 | 5 | Britta Steffen Silke Lippok Lisa Vitting Daniela Schreiber | 3:37.28 | Q | |
| 5 | 1 | 4 | Kelly Stubbins Merindah Dingjan Yolane Kukla Marieke Guehrer | 3:38.35 | Q | |
| 6 | 1 | 3 | Victoria Poon Erica Morningstar Chantal van Landeghem Geneviève Saumur | 3:38.80 | Q | |
| 7 | 2 | 3 | Yayoi Matsumoto Haruka Ueda Hanae Ito Natsuki Hasegawa | 3:39.28 | Q | |
| 8 | 1 | 7 | Pernille Blume Mie Nielsen Lotte Friis Jeanette Ottesen | 3:39.48 | Q, NR | |
| 9 | 2 | 6 | Amy Smith Francesca Halsall Caitlin McClatchey Rebecca Turner | 3:39.74 | ||
| 10 | 1 | 6 | Ida Marko-Varga Gabriella Fagundez Michelle Coleman Petra Granlund | 3:40.45 | ||
| 11 | 2 | 2 | Veronika Popova Margarita Nesterova Natalya Lovtsova Elena Sokolova | 3:40.73 | ||
| 12 | 2 | 7 | Aleksandra Gerasimenya Sviatlana Khakhlova Yana Parakhouskaya Yulia Khitraya | 3:43.41 | ||
| 13 | 2 | 8 | Tatiana Lemos Daynara de Paula Flávia Delaroli Michelle Lenhardt | 3:44.62 | ||
| 14 | 2 | 1 | Natasha Hind Amaka Gessler Sophia Batchelor Penelope May Marshall | 3:44.99 |
Final
The final was held at 19:10.| Rank | Lane | Nation | Swimmers | Time | Notes |
| 5 | Inge Dekker Ranomi Kromowidjojo Marleen Veldhuis Femke Heemskerk | 3:33.96 | |||
| 4 | Natalie Coughlin Missy Franklin Jessica Hardy Dana Vollmer | 3:34.47 | |||
| 6 | Britta Steffen Silke Lippok Lisa Vitting Daniela Schreiber | 3:36.05 | |||
| 4 | 3 | Li Zhesi Wang Shijia Pang Jiaying Tang Yi | 3:36.36 | ||
| 5 | 2 | Bronte Barratt Marieke Guehrer Merindah Dingjan Alicia Coutts | 3:36.75 | ||
| 6 | 7 | Victoria Poon Geneviève Saumur Chantal van Landeghem Julia Wilkinson | 3:38.42 | ||
| 7 | 1 | Haruka Ueda Yayoi Matsumoto Hanae Ito Natsuki Hasegawa | 3:39.55 | ||
| 8 | 8 | Pernille Blume Mie Nielsen Jeanette Ottesen Lotte Friis | 3:39.74 |