# Swimming at the 2018 Asian Games – Men's 4 × 100 metre medley relay

The men's 4 × 100 metre medley relay event at the 2018 Asian Games took place on 24 August at the Gelora Bung Karno Aquatic Stadium.

## Schedule

All times are Western Indonesia Time (UTC+07:00)
| Date | Time | Event |
| Friday, 24 August 2018 | 10:09 | Heats |
| Friday, 24 August 2018 | 19:32 | Final |

## Records

Prior to this competition, the existing world, Asian and Games records were as follows.
| World Record | United States | 3:27.28 | Rome, Italy | 2 August 2009 |
| Asian Record | Japan | 3:30.19 | Budapest, Hungary | 30 July 2017 |
| Games Record | China | 3:31.37 | Incheon, South Korea | 26 September 2014 |

## Results
### Heats

| Rank | Heat | Team | Time |
| 1 | 3 | Japan (JPN) | 3:36.95 |
| | | Masaki Kaneko | 54.87 |
| | | Ippei Watanabe | 1:00.03 |
| | | Nao Horomura | 52.83 |
| | | Katsumi Nakamura | 49.22 |
| 2 | 2 | China (CHN) | 3:38.14 |
| | | Li Guangyuan | 54.64 |
| | | Qin Haiyang | 1:00.44 |
| | | Zheng Xiaojing | 54.12 |
| | | He Junyi | 48.94 |
| 3 | 3 | Kazakhstan (KAZ) | 3:38.57 |
| | | Adil Kaskabay | 56.11 |
| | | Dmitriy Balandin | 59.39 |
| | | Adilbek Mussin | 52.46 |
| | | Alexandr Varakin | 50.61 |
| 4 | 3 | Singapore (SGP) | 3:39.69 |
| | | Quah Zheng Wen | 55.28 |
| | | Lionel Khoo | 1:01.55 |
| | | Joseph Schooling | 53.30 |
| | | Darren Lim | 49.56 |
| 5 | 3 | Indonesia (INA) | 3:40.00 |
| | | I Gede Siman Sudartawa | 56.07 |
| | | Gagarin Nathaniel | 1:00.87 |
| | | Glenn Victor Sutanto | 53.00 |
| | | Triady Fauzi Sidiq | 50.06 |
| 6 | 2 | South Korea (KOR) | 3:41.85 |
| | | Kang Ji-seok | 55.34 |
| | | Kim Jae-youn | 1:02.20 |
| | | Park Jung-hun | 54.60 |
| | | Park Seon-kwan | 49.71 |
| 7 | 2 | Chinese Taipei (TPE) | 3:43.96 |
| | | Chuang Mu-lun | 56.90 |
| | | Lee Hsuan-yen | 1:02.68 |
| | | Chu Chen-ping | 53.91 |
| | | An Ting-yao | 50.47 |
| 8 | 2 | Hong Kong (HKG) | 3:44.16 |
| | | Lau Shiu Yue | 57.54 |
| | | Kenneth To | 1:01.47 |
| | | Nicholas Lim | 54.29 |
| | | Jeremy Wong | 50.86 |
| 9 | 2 | India (IND) | 3:44.94 |
| | | Srihari Nataraj | 56.31 |
| | | Sandeep Sejwal | 1:04.03 |
| | | Sajan Prakash | 53.43 |
| | | Aaron D'Souza | 51.17 |
| 10 | 1 | Uzbekistan (UZB) | 3:45.64 |
| | | Aleksey Tarasenko | 58.25 |
| | | Vladislav Mustafin | 1:03.81 |
| | | Artyom Kozlyuk | 53.98 |
| | | Khurshidjon Tursunov | 49.60 |
| 11 | 3 | Vietnam (VIE) | 3:45.76 |
| | | Paul Lê Nguyễn | 56.02 |
| | | Phạm Thanh Bảo | 1:03.79 |
| | | Hoàng Quý Phước | 54.29 |
| | | Ngô Đình Chuyền | 51.66 |
| 12 | 3 | Malaysia (MAS) | 3:49.08 |
| | | Tern Jian Han | 58.39 |
| | | Foong Wei Tze | 1:05.63 |
| | | Chan Jie | 54.17 |
| | | Keith Lim | 50.89 |
| 13 | 2 | Macau (MAC) | 3:50.22 |
| | | Ngou Pok Man | 58.55 |
| | | Chao Man Hou | 1:01.67 |
| | | Chou Kit | 57.80 |
| | | Lin Sizhuang | 52.20 |
| 14 | 3 | Mongolia (MGL) | 4:09.99 |
| | | Erdenemönkhiin Demüül | 1:03.99 |
| | | Günsennorovyn Zandanbal | 1:09.11 |
| | | Batmönkhiin Jürmed | 1:01.49 |
| | | Boldbaataryn Buyantogtokh | 55.40 |
| 15 | 2 | Pakistan (PAK) | 4:10.92 |
| | | Haseeb Tariq | 59.05 |
| | | Muhammad Hamza Malik | 1:13.96 |
| | | Kawas Behram Aga | 1:02.25 |
| | | Muhammad Yahya Khan | 55.66 |
| 16 | 1 | Qatar (QAT) | 4:15.23 |
| | | Abdulaziz Al-Obaidly | 1:01.78 |
| | | Abdelrahman Hesham Mohamed | 1:12.13 |
| | | Firas Saidi | 1:01.29 |
| | | Youssef Hesham Mohamed | 1:00.03 |
| 17 | 1 | Maldives (MDV) | 4:47.94 |
| | | Ali Imaan | 1:12.43 |
| | | Hassan Ashraf | 1:20.83 |
| | | Mubal Azzam Ibrahim | 1:11.82 |
| | | Hussain Haish Hassan | 1:02.86 |

### Final

| Rank | Team | Time | Notes |
| | China (CHN) | 3:29.99 | AR |
| | Xu Jiayu | 52.60 | |
| | Yan Zibei | 58.86 | |
| | Li Zhuhao | 50.61 | |
| | Yu Hexin | 47.92 | |
| | Japan (JPN) | 3:30.03 | |
| | Ryosuke Irie | 52.53 | |
| | Yasuhiro Koseki | 58.45 | |
| | Yuki Kobori | 51.06 | |
| | Shinri Shioura | 47.99 | |
| | Kazakhstan (KAZ) | 3:35.62 | |
| | Adil Kaskabay | 55.53 | |
| | Dmitriy Balandin | 58.88 | |
| | Adilbek Mussin | 52.44 | |
| | Alexandr Varakin | 48.77 | |
| 4 | Singapore (SGP) | 3:37.68 | |
| | Quah Zheng Wen | 54.69 | |
| | Lionel Khoo | 1:02.17 | |
| | Joseph Schooling | 51.53 | |
| | Darren Chua | 49.29 | |
| 5 | South Korea (KOR) | 3:37.93 | |
| | Lee Ju-ho | 54.77 | |
| | Moon Jae-kwon | 1:00.87 | |
| | Chang Gyu-cheol | 53.15 | |
| | Yang Jae-hoon | 49.14 | |
| 6 | Indonesia (INA) | 3:38.18 | |
| | I Gede Siman Sudartawa | 55.02 | |
| | Gagarin Nathaniel | 1:01.40 | |
| | Glenn Victor Sutanto | 52.48 | |
| | Triady Fauzi Sidiq | 49.28 | |
| 7 | Chinese Taipei (TPE) | 3:41.52 | |
| | Chuang Mu-lun | 56.55 | |
| | Lee Hsuan-yen | 1:01.48 | |
| | Chu Chen-ping | 54.07 | |
| | An Ting-yao | 49.42 | |
| 8 | Hong Kong (HKG) | 3:44.61 | |
| | Lau Shiu Yue | 58.08 | |
| | Boris Yang | 1:03.30 | |
| | Nicholas Lim | 54.44 | |
| | Kenneth To | 48.79 | |