2018 FINA World Swimming Championships (25 m) – Women's 4 × 100 metre freestyle relay
# 2018 FINA World Swimming Championships (25 m) – Women's 4 × 100 metre freestyle relay

The Women's 4 × 100 metre freestyle relay competition of the 2018 FINA World Swimming Championships (25 m) was held on 11 December 2018 at the Hangzhou Olympic Sports Center.

## Records

Prior to the competition, the existing world and championship records were as follows.

| | Nation | Time | Location | Date |
| - | - | - | - | - |
| World record Championship record | Netherlands | 3:26.53 | Doha | 5 December 2014 |

## Results

### Heats

The heats were started on 11 December at 12:27.

| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| - | - | - | - | - | - | - |
| 1 | 1 | 4 | United States | Lia Neal (52.81) Veronica Burchill (52.81) Erika Brown (52.65) Kelsi Dahlia (51.25) | 3:29.52 | Q |
| 2 | 1 | 5 | Netherlands | Kim Busch (53.25) Maaike de Waard (53.35) Valerie van Roon (53.61) Ranomi Kromowidjojo (52.46) | 3:32.67 | Q |
| 3 | 2 | 5 | Russia | Maria Kameneva (52.98) Daria Kartashova (54.10) Daria Mullakaeva (52.98) Valeriya Salamatina (53.27) | 3:33.33 | Q |
| 4 | 2 | 4 | China | Wang Jingzhuo (54.43) Yang Junxuan (52.63) Liu Xiaohan (53.54) Zhu Menghui (52.82) | 3:33.42 | Q |
| 5 | 2 | 3 | Japan | Runa Imai (54.26) Aya Sato (53.00) Tomomi Aoki (53.46) Chihiro Igarashi (53.27) | 3:33.99 | Q |
| 6 | 2 | 2 | Germany | Annika Bruhn (53.81) Reva Foos (53.91) Jessica Steiger (53.50) Marie Pietruschka (53.09) | 3:34.31 | Q |
| 7 | 1 | 3 | Hong Kong | Ho Nam Wai (56.21) Stephanie Au (55.21) Chan Kin Lok (55.43) Sze Hang Yu (54.23) | 3:41.08 | Q |
| 8 | 2 | 6 | Turkey | Selen Özbilen (54.71) Roza Erdemli (56.75) Viktoriya Zeynep Güneş (56.22) Ekaterina Avramova (54.18) | 3:41.86 | Q |
| 9 | 2 | 7 | New Zealand | Rebecca Moynihan (55.37) Paige Flynn (54.45) Vanessa Ouwehand (57.69) Emma Godwin (55.18) | 3:42.69 | |
| 10 | 1 | 6 | Slovakia | Barbora Mikuskova (56.28) Tamara Potocká (55.74) Sabína Kupčová (55.98) Laura Benková (55.74) | 3:43.74 | |
| 11 | 1 | 2 | Chinese Taipei | Chen Szu-an (57.04) Huang Mei-chien (58.05) Wang Wan-chen (57.69) Lin Pei-wun (57.67) | 3:50.45 | |

### Final

The final was held at 20:43.

| Rank | Lane | Nation | Swimmers | Time |
| - | - | - | - | - |
| | 4 | United States | Olivia Smoliga (52.71) Lia Neal (52.58) Mallory Comerford (51.09) Kelsi Dahlia (51.40) | 3:27.78 |
| | 5 | Netherlands | Kim Busch (53.19) Femke Heemskerk (50.93) Maaike de Waard (53.13) Ranomi Kromowidjojo (50.77) | 3:28.02 |
| | 6 | China | Zhu Menghui (52.58) Yang Junxuan (52.28) Liu Xiaohan (53.26) Wang Jingzhuo (52.80) | 3:30.92 |
| 4 | 2 | Japan | Tomomi Aoki (53.33) Aya Sato (52.60) Runa Imai (53.12) Chihiro Igarashi (52.63) | 3:31.68 |
| 5 | 3 | Russia | Maria Kameneva (53.01) Daria Mullakaeva (53.20) Valeriya Salamatina (52.82) Veronika Andrusenko (53.46) | 3:32.48 |
| 6 | 7 | Germany | Annika Bruhn (53.77) Reva Foos (53.32) Jessica Steiger (53.03) Marie Pietruschka (53.15) | 3:32.27 |
| 7 | 1 | Hong Kong | Ho Nam Wai (55.91) Stephanie Au (54.72) Chan Kin Lok (55.33) Sze Hang Yu (54.29) | 3:40.25 |
| 8 | 8 | Turkey | Selen Özbilen (54.68) Roza Erdemli (56.37) Viktoriya Zeynep Güneş (56.25) Ekaterina Avramova (53.95) | 3:41.25 |
