Swimming at the 2015 World Aquatics Championships – Women's 4 × 100 metre medley relay
The Women's 4 × 100 metre medley relay competition of the swimming events at the 2015 World Aquatics Championships was held on 9 August with the heats and with the final.
Records
Prior to the competition, the existing world and championship records were as follows.Results
Heats
The heats were held at 10:48.| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 1 | 7 | Fu Yuanhui Shi Jinglin Chen Xinyi Qiu Yuhan | 3:57.04 | Q | |
| 2 | 2 | 4 | Kathleen Baker Micah Lawrence Kendyl Stewart Margo Geer | 3:57.12 | Q | |
| 3 | 1 | 6 | Michelle Coleman Jennie Johansson Sarah Sjöström Louise Hansson | 3:57.29 | Q | |
| 4 | 3 | 6 | Madison Wilson Lorna Tonks Madeline Groves Melanie Wright | 3:57.95 | Q | |
| 5 | 3 | 5 | Mie Ø. Nielsen Rikke Møller Pedersen Jeanette Ottesen Pernille Blume | 3:58.38 | Q | |
| 6 | 2 | 1 | Dominique Bouchard Rachel Nicol Noemie Thomas Sandrine Mainville | 3:59.02 | Q | |
| 7 | 1 | 2 | Lauren Quigley Siobhan-Marie O'Connor Rachael Kelly Rebecca Turner | 4:00.02 | Q | |
| 8 | 3 | 3 | Sayaka Akase Kanako Watanabe Natsumi Hoshi Miki Uchida | 4:00.43 | Q | |
| 9 | 3 | 1 | Elena Gemo Arianna Castiglioni Ilaria Bianchi Erika Ferraioli | 4:00.92 | ||
| 10 | 2 | 7 | Daria Ustinova Vitalina Simonova Nataliya Lovtsova Veronika Popova | 4:01.12 | ||
| 11 | 3 | 0 | Lisa Graf Vanessa Grimberg Alexandra Wenk Annika Bruhn | 4:01.40 | ||
| 12 | 2 | 3 | Béryl Gastaldello Charlotte Bonnet Marie Wattel Anna Santamans | 4:02.13 | ||
| 13 | 2 | 0 | Mimosa Jallow NR Jenna Laukkanen Emilia Pikkarainen Hanna-Maria Seppälä | 4:02.30 | NR | |
| 14 | 2 | 2 | Etiene Medeiros Jhennifer Conceição Daynara de Paula Larissa Oliveira | 4:03.24 | ||
| 15 | 1 | 5 | Simona Baumrtová Petra Chocová Lucie Svěcená Anna Kolářová | 4:03.44 | NR | |
| 16 | 3 | 9 | Duane Da Rocha Jessica Vall Judit Ignacio Sorribes Melani Costa | 4:03.91 | ||
| 17 | 1 | 4 | Theodora Drakou Aikaterini Sarakatsani Anna Ntountounaki Theodora Giareni | 4:04.29 | NR | |
| 18 | 1 | 3 | Alicja Tchórz Dominika Sztandera Anna Dowgiert Katarzyna Wilk | 4:04.43 | NR | |
| 18 | 2 | 5 | Eygló Ósk Gústafsdóttir Hrafnhildur Lúthersdóttir Jóhanna Gústafsdóttir Bryndis Hansen | 4:04.43 | NR | |
| 20 | 3 | 7 | Stephanie Au NR Siobhan Haughey Sze Hang Yu Camille Cheng | 4:04.54 | ||
| 21 | 3 | 8 | Halime Zülal Zeren Viktoriya Zeynep Gunes Gizem Bozkurt Ekaterina Avramova | 4:06.34 | NR | |
| 22 | 3 | 2 | Jeserik Pinto Mercedes Toledo Isabella Páez Arlene Semeco | 4:11.74 | NR | |
| 23 | 2 | 6 | Quah Ting Wen Samantha Yeo Marina Chan Amanda Lim | 4:17.26 | ||
| 24 | 2 | 8 | Lourdes Villaseñor Daniela Carrillo Sharo Rodríguez Montserrat Ortuño | 4:19.15 | ||
| 25 | 2 | 9 | Tatiana Perstniova Tatiana Chișca Alexandra Vinicenco Mihaela Bat | 4:26.55 | ||
| 3 | 4 | Sharon van Rouwendaal Moniek Nijhuis Inge Dekker Femke Heemskerk | DNS |
Final
The final was held at 19:25.| Rank | Lane | Nation | Swimmers | Time | Notes |
| 4 | Fu Yuanhui Shi Jinglin Lu Ying Shen Duo | 3:54.41 | |||
| 3 | Michelle Coleman Jennie Johansson Sarah Sjöström Louise Hansson | 3:55.24 | ER | ||
| 6 | Emily Seebohm Taylor McKeown Emma McKeon Bronte Campbell | 3:55.56 | |||
| 4 | 5 | Missy Franklin Jessica Hardy Kendyl Stewart Simone Manuel | 3:56.76 | ||
| 5 | 2 | Mie Ø. Nielsen Rikke Møller Pedersen Jeanette Ottesen Pernille Blume | 3:57.61 | ||
| 6 | 7 | Dominique Bouchard Rachel Nicol Katerine Savard Sandrine Mainville | 3:57.96 | ||
| 1 | Lauren Quigley Siobhan-Marie O'Connor Rachael Kelly Francesca Halsall | DSQ | |||
| 8 | Sayaka Akase Kanako Watanabe Natsumi Hoshi Miki Uchida | DSQ |