Swimming at the 2019 World Aquatics Championships – Women's 4 × 100 metre medley relay
The Women's 4 × 100 metre medley relay competition at the 2019 World Championships was held on 28 July 2019.
Records
Prior to the competition, the existing world and championship records were as follows.Results
Heats
The heats were held on 28 July at 11:07.| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 2 | 4 | Olivia Smoliga Melanie Margalis Katie McLaughlin Mallory Comerford | 3:55.39 | Q | |
| 2 | 3 | 4 | Kaylee McKeown Jessica Hansen Brianna Throssell Madison Wilson | 3:58.19 | Q | |
| 3 | 2 | 6 | Margherita Panziera Arianna Castiglioni Ilaria Bianchi Federica Pellegrini | 3:58.35 | Q | |
| 4 | 3 | 3 | Kylie Masse Kierra Smith Rebecca Smith Taylor Ruck | 3:58.63 | Q | |
| 5 | 3 | 7 | Fu Yuanhui Yu Jingyao Wang Yichun Zhu Menghui | 3:59.26 | Q | |
| 6 | 2 | 1 | Michelle Coleman Sophie Hansson Louise Hansson Sarah Sjöström | 3:59.40 | Q | |
| 7 | 3 | 6 | Georgia Davies Molly Renshaw Alys Thomas Anna Hopkin | 3:59.74 | Q | |
| 8 | 2 | 5 | Natsumi Sakai Reona Aoki Hiroko Makino Rika Omoto | 3:59.87 | Q | |
| 9 | 2 | 2 | Laura Riedemann Anna Elendt Angelina Köhler Jessica Steiger | 4:00.91 | ||
| 10 | 3 | 2 | Kira Toussaint Tes Schouten Kim Busch Femke Heemskerk | 4:01.42 | ||
| 11 | 3 | 8 | Nina Kost Lisa Mamie Alexandra Touretski Maria Ugolkova | 4:01.85 | NR | |
| 12 | 3 | 5 | Daria Vaskina Anna Belousova Svetlana Chimrova Daria S Ustinova | 4:02.26 | ||
| 13 | 1 | 5 | Im Da-sol Back Su-yeon Park Ye-rin Jeong So-eun | 4:03.38 | NR | |
| 14 | 2 | 7 | Stephanie Au Yeung Jamie Zhen Mei Chan Kin Lok Siobhan Haughey | 4:03.52 | ||
| 15 | 2 | 8 | Alicja Tchórz Weronika Hallmann Paulina Nogaj Katarzyna Wasick | 4:04.27 | ||
| 16 | 2 | 3 | Mie Nielsen Matilde Schroder Jeanette Ottesen Julie Kepp Jensen | 4:04.33 | ||
| 17 | 2 | 0 | Mariella Venter Tatjana Schoenmaker Tayla Lovemore Emma Chelius | 4:05.12 | ||
| 18 | 1 | 3 | Mimosa Jallow Ida Hulkko Jenna Laukkanen Laura Lahtinen | 4:05.50 | ||
| 19 | 3 | 1 | Katalin Burián Anna Sztankovics Liliána Szilágyi Evelyn Verrasztó | 4:05.61 | ||
| 20 | 1 | 4 | Ekaterina Avramova Viktoriya Zeynep Güneş Aleyna Özkan Selen Özbilen | 4:05.72 | NR | |
| 21 | 3 | 0 | Quah Jing Wen Christie Chue Quah Ting Wen Cherlyn Yeoh | 4:11.67 |
Final
The final was held on 28 July at 21:56.| Rank | Lane | Nation | Swimmers | Time | Notes |
| 4 | Regan Smith Lilly King Kelsi Dahlia Simone Manuel | 3:50.40 | |||
| 5 | Minna Atherton Jessica Hansen Emma McKeon Cate Campbell | 3:53.42 | |||
| 6 | Kylie Masse Sydney Pickrem Maggie MacNeil Penny Oleksiak | 3:53.58 | NR | ||
| 4 | 3 | Margherita Panziera Martina Carraro Elena Di Liddo Federica Pellegrini | 3:56.50 | NR | |
| 5 | 2 | Chen Jie Yu Jingyao Zhang Yufei Yang Junxuan | 3:57.11 | ||
| 6 | 8 | Natsumi Sakai Reona Aoki Hiroko Makino Rika Omoto | 3:58.14 | ||
| 7 | 7 | Michelle Coleman Sophie Hansson Louise Hansson Sarah Sjöström | 3:58.39 | ||
| 8 | 1 | Georgia Davies Molly Renshaw Alys Thomas Freya Anderson | 3:59.38 |