# Swimming at the 2018 Asian Games – Women's 4 × 100 metre freestyle relay

The women's 4 × 100 metre freestyle relay event at the 2018 Asian Games took place on 19 August at the Gelora Bung Karno Aquatic Stadium.

## Schedule

All times are Western Indonesia Time (UTC+07:00)
| Date | Time | Event |
| Sunday, 19 August 2018 | 10:30 | Heats |
| Sunday, 19 August 2018 | 19:44 | Final |

## Records

Prior to this competition, the existing world, Asian and Games records were as follows.
| World Record | Australia | 3:30.05 | Gold Coast, Australia | 5 April 2018 |
| Asian Record | China | 3:35.63 | Rome, Italy | 26 July 2009 |
| Games Record | China | 3:36.88 | Guangzhou, China | 14 November 2010 |

## Results
### Legend

* DNS — Did not start

### Heats

| Rank | Heat | Team | Time |
| 1 | 2 | China (CHN) | 3:40.32 |
| | | Wang Jingzhuo | 55.06 |
| | | Lao Lihui | 55.02 |
| | | Liu Xiaohan | 54.73 |
| | | Zhu Menghui | 55.51 |
| 2 | 1 | Japan (JPN) | 3:42.47 |
| | | Mayuka Yamamoto | 55.74 |
| | | Rio Shirai | 55.85 |
| | | Tomomi Aoki | 55.61 |
| | | Chihiro Igarashi | 55.27 |
| 3 | 2 | Hong Kong (HKG) | 3:45.45 |
| | | Camille Cheng | 55.79 |
| | | Stephanie Au | 56.87 |
| | | Ho Nam Wai | 56.62 |
| | | Tam Hoi Lam | 56.17 |
| 4 | 1 | Singapore (SGP) | 3:45.99 |
| | | Quah Jing Wen | 56.27 |
| | | Cherlyn Yeoh | 56.53 |
| | | Marina Chan | 56.75 |
| | | Amanda Lim | 56.44 |
| 5 | 1 | Thailand (THA) | 3:46.98 |
| | | Manita Sathianchokwisan | 56.90 |
| | | Kornkarnjana Sapianchai | 56.16 |
| | | Jenjira Srisaard | 57.21 |
| | | Natthanan Junkrajang | 56.71 |
| 6 | 2 | South Korea (KOR) | 3:47.91 |
| | | Ko Mi-so | 56.49 |
| | | Kim Min-ju | 56.26 |
| | | Kim Jin-ha | 57.43 |
| | | Park Han-byeol | 57.73 |
| 7 | 2 | Indonesia (INA) | 3:52.49 |
| | | Adinda Larasati Dewi | 59.64 |
| | | Ressa Kania Dewi | 57.68 |
| | | Sagita Putri Krisdewanti | 57.60 |
| | | Patricia Yosita Hapsari | 57.57 |
| 8 | 1 | Macau (MAC) | 3:59.49 |
| | | Tan Chi Yan | 59.63 |
| | | Erica Vong | 59.13 |
| | | Lei On Kei | 1:00.57 |
| | | Long Chi Wai | 1:00.16 |
| 9 | 2 | Mongolia (MGL) | 4:14.58 |
| | | Altanshagain Kherlen | 1:06.78 |
| | | Khuyagbaataryn Enkhzul | 1:02.76 |
| | | Bayaryn Yesüi | 1:04.40 |
| | | Batbayaryn Enkhkhüslen | 1:00.64 |
| 10 | 2 | Maldives (MDV) | 5:09.90 |
| | | Aishath Sajina | 1:21.93 |
| | | Aishath Hulva Khulail | 1:20.80 |
| | | Anmau Ahmed Saleem | 1:14.42 |
| | | Aishath Sausan | 1:12.75 |
| — | 1 | Tajikistan (TJK) | DNS |

### Final

| Rank | Team | Time | Notes |
| | Japan (JPN) | 3:36.52 | GR |
| | Rikako Ikee | 53.60 | GR |
| | Natsumi Sakai | 54.81 | |
| | Tomomi Aoki | 54.21 | |
| | Chihiro Igarashi | 53.90 | |
| | China (CHN) | 3:36.78 | |
| | Zhu Menghui | 54.00 | |
| | Wu Yue | 54.67 | |
| | Wu Qingfeng | 54.43 | |
| | Yang Junxuan | 53.68 | |
| | Hong Kong (HKG) | 3:41.88 | |
| | Camille Cheng | 54.98 | |
| | Stephanie Au | 55.60 | |
| | Tam Hoi Lam | 56.05 | |
| | Sze Hang Yu | 55.25 | |
| 4 | Singapore (SGP) | 3:44.21 | |
| | Quah Jing Wen | 56.32 | |
| | Quah Ting Wen | 55.78 | |
| | Christie Chue | 56.46 | |
| | Cherlyn Yeoh | 55.65 | |
| 5 | Thailand (THA) | 3:45.93 | |
| | Manita Sathianchokwisan | 56.73 | |
| | Kornkarnjana Sapianchai | 55.86 | |
| | Jenjira Srisaard | 57.06 | |
| | Natthanan Junkrajang | 56.28 | |
| 6 | South Korea (KOR) | 3:48.76 | |
| | Ko Mi-so | 56.62 | |
| | Kim Min-ju | 56.92 | |
| | Choi Jung-min | 57.60 | |
| | Park Ye-rin | 57.62 | |
| 7 | Indonesia (INA) | 3:51.32 | |
| | Sagita Putri Krisdewanti | 58.11 | |
| | Ressa Kania Dewi | 57.76 | |
| | Adinda Larasati Dewi | 58.35 | |
| | Patricia Yosita Hapsari | 57.10 | |
| 8 | Macau (MAC) | 3:57.65 | |
| | Tan Chi Yan | 59.02 | |
| | Erica Vong | 58.98 | |
| | Lei On Kei | 59.30 | |
| | Long Chi Wai | 1:00.35 | |