Swimming at the 2017 World Aquatics Championships – Women's 4 × 200 metre freestyle relay
The Women's 4 × 200 metre freestyle relay competition at the 2017 World Championships was held on 27 July 2017.
Records
Prior to the competition, the existing world and championship records were as follows.Results
Heats
The heats were held at 10:48.| Rank | Lane | Nation | Swimmers | Time | Notes |
| 1 | 6 | Zhang Yuhan Liu Zixuan Wang Jingzhuo Shen Duo | 7:51.75 | Q | |
| 2 | 8 | Chihiro Igarashi Rikako Ikee Tomomi Aoki Aya Takano | 7:53.67 | Q | |
| 3 | 4 | Melanie Margalis Cierra Runge Hali Flickinger Madisyn Cox | 7:53.73 | Q | |
| 4 | 5 | Madison Wilson Kotuku Ngawati Shayna Jack Leah Neale | 7:54.74 | Q | |
| 5 | 1 | Robin Neumann Femke Heemskerk Esmee Vermeulen Marjolein Delno | 7:55.16 | Q | |
| 6 | 2 | Daria Ustinova Viktoriya Andreyeva Anastasia Guzhenkova Arina Openysheva | 7:55.67 | Q | |
| 7 | 7 | Ajna Késely Evelyn Verrasztó Zsuzsanna Jakabos Fanni Gyurinovics | 7:55.77 | Q | |
| 8 | 3 | Katerine Savard Mary-Sophie Harvey Rebecca Smith Kayla Sanchez | 7:56.49 | Q | |
| 9 | 0 | Alice Mizzau Stefania Pirozzi Anna Mascolo Simona Quadarella | 8:02.82 | ||
| 10 | 9 | Signe Bro Marina Hansen Maj Howardsen Anina Lund | 8:06.67 |
Final
The final was held at 19:16.| Rank | Lane | Nation | Swimmers | Time | Notes |
| 3 | Leah Smith Mallory Comerford Melanie Margalis Katie Ledecky | 7:43.39 | |||
| 4 | Ai Yanhan Liu Zixuan Zhang Yuhan Li Bingjie | 7:44.96 | |||
| 6 | Madison Wilson Emma McKeon Kotuku Ngawati Ariarne Titmus | 7:48.51 | |||
| 4 | 7 | Veronika Popova Viktoriya Andreyeva Daria Ustinova Arina Openysheva | 7:48.59 | NR | |
| 5 | 5 | Chihiro Igarashi Rikako Ikee Tomomi Aoki Aya Takano | 7:50.43 | NR | |
| 6 | 1 | Ajna Késely Zsuzsanna Jakabos Evelyn Verrasztó Katinka Hosszú | 7:51.33 | ||
| 7 | 2 | Robin Neumann Femke Heemskerk Esmee Vermeulen Marjolein Delno | 7:54.29 | ||
| 8 | 8 | Mary-Sophie Harvey Rebecca Smith Katerine Savard Mackenzie Padington | 7:55.57 |