# Swimming at the 2017 World Aquatics Championships – Men's 4 × 100 metre medley relay

The Men's 4 × 100 metre medley relay competition at the 2017 World Championships was held on 30 July 2017.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | United States | 3:27.28 | Rome, Italy | 2 August 2009 |
| Competition record | United States | 3:27.28 | Rome, Italy | 2 August 2009 |

## Results
### Heats

The heats were held at 10:27.
| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 3 | 4 | United States | Ryan Murphy (52.69) Cody Miller (58.99) Tim Phillips (50.74) Townley Haas (47.24) | 3:29.66 | Q |
| 2 | 3 | 3 | Japan | Ryosuke Irie (52.86) Yasuhiro Koseki (59.11) Yuki Kobori (51.27) Shinri Shioura (48.39) | 3:31.63 | Q |
| 3 | 2 | 5 | Russia | Grigory Tarasevich (53.71) Anton Chupkov (59.06) Daniil Pakhomov (51.55) Danila Izotov (47.80) | 3:32.12 | Q |
| 4 | 2 | 4 | Great Britain | Chris Walker-Hebborn (54.27) Ross Murdoch (59.50) James Guy (51.04) Duncan Scott (47.54) | 3:32.35 | Q |
| 5 | 3 | 6 | Brazil | Guilherme Guido (54.11) Felipe Lima (59.51) Henrique Martins (51.03) Bruno Fratus (47.73) | 3:32.38 | Q |
| 6 | 3 | 2 | Hungary | Richárd Bohus (54.01) Dániel Gyurta (1:00.23) Kristóf Milák (51.70) Dominik Kozma (47.41) | 3:33.35 | Q |
| 7 | 2 | 3 | China | Li Guangyuan (53.96) Yan Zibei (59.02) Li Zhuhao (51.74) Sun Yang (48.78) | 3:33.50 | Q |
| 8 | 3 | 1 | Belarus | Mikita Tsmyh (54.50) Ilya Shymanovich (59.03) Yauhen Tsurkin (51.45) Artsiom Machekin (48.85) | 3:33.83 | Q |
| 9 | 3 | 5 | Australia | Mitch Larkin (54.23) Matthew Wilson (1:00.21) David Morgan (51.56) Cameron McEvoy (47.91) | 3:33.91 | |
| 10 | 1 | 4 | Poland | Tomasz Polewka (54.49) Marcin Stolarski (59.78) Konrad Czerniak (51.15) Kacper Majchrzak (48.58) | 3:34.00 | |
| 11 | 2 | 2 | Italy | Matteo Milli (54.91) Nicolò Martinenghi (59.43) Piero Codia (51.16) Alessandro Miressi (48.61) | 3:34.11 | |
| 12 | 2 | 7 | Canada | Javier Acevedo (55.15) Richard Funk (59.25) Josiah Binnema (52.60) Yuri Kisil (48.14) | 3:35.14 | |
| 13 | 2 | 6 | Germany | Marek Ulrich (55.05) Marco Koch (1:00.02) Marius Kusch (52.17) Damian Wierling (48.02) | 3:35.26 | |
| 14 | 3 | 7 | Greece | Apostolos Christou (54.18) Ioannis Karpouzlis (1:01.57) Andreas Vazaios (52.45) Kristian Golomeev (47.73) | 3:35.93 | |
| 15 | 3 | 9 | South Africa | Martin Binedell (56.10) Cameron van der Burgh (59.77) Chad le Clos (50.99) Myles Brown (49.45) | 3:36.31 | |
| 16 | 3 | 8 | Ireland | Shane Ryan (54.40) Nicholas Quinn (1:00.62) Brendan Hyland (52.58) Jordan Sloan (49.01) | 3:36.61 | NR |
| 17 | 2 | 1 | Lithuania | Danas Rapšys (54.30) Andrius Šidlauskas (1:00.17) Deividas Margevičius (53.00) Simonas Bilis (49.28) | 3:36.75 | |
| 18 | 1 | 5 | Egypt | Youssef Abdalla (55.37) Marwan El-Kamash (1:02.06) Omar Eissa (54.08) Mohamed Samy (49.34) | 3:40.85 | NR |
| 19 | 2 | 8 | Indonesia | I Gede Siman Sudartawa (56.63) Indra Gunawan (1:03.33) Glenn Victor Sutanto (53.74) Triady Fauzi Sidiq (50.87) | 3:44.57 | |
| 20 | 3 | 0 | Paraguay | Charles Hockin (55.98) Renato Prono (1:03.31) Benjamin Hockin (53.41) Matías López (53.21) | 3:45.91 | |
| 21 | 2 | 0 | Latvia | Girts Feldbergs (55.86) Daniils Bobrovs (1:03.73) Nikolajs Maskaļenko (56.00) Uvis Kalniņš (50.67) | 3:46.26 | |
| | 1 | 3 | Kenya | DNS | DNS | DNS |
| | 2 | 9 | Israel | DNS | DNS | DNS |

### Final

The final was held at 19:25.
| Rank | Lane | Nation | Swimmers | Time | Notes |
| | 4 | United States | Matt Grevers (52.26) Kevin Cordes (58.89) Caeleb Dressel (49.76) Nathan Adrian (47.00) | 3:27.91 | |
| | 6 | Great Britain | Chris Walker-Hebborn (54.20) Adam Peaty (56.91) James Guy (50.80) Duncan Scott (47.04) | 3:28.95 | NR |
| | 3 | Russia | Evgeny Rylov (52.89) Kirill Prigoda (59.02) Aleksandr Popkov (51.16) Vladimir Morozov (46.69) | 3:29.76 | NR |
| 4 | 5 | Japan | Ryosuke Irie (52.80) Yasuhiro Koseki (58.54) Yuki Kobori (51.21) Shinri Shioura (47.64) | 3:30.19 | AS |
| 5 | 2 | Brazil | Guilherme Guido (53.53) João Gomes Júnior (58.80) Henrique Martins (51.12) Marcelo Chierighini (48.08) | 3:31.53 | |
| 6 | 1 | China | Xu Jiayu (52.89) Yan Zibei (59.02) Li Zhuhao (51.45) Yu Hexin (48.29) | 3:31.65 | |
| 7 | 7 | Hungary | Richárd Bohus (53.99) Dániel Gyurta (1:00.45) Kristóf Milák (50.97) Dominik Kozma (46.72) | 3:32.13 | NR |
| 8 | 8 | Belarus | Mikita Tsmyh (54.54) Ilya Shymanovich (58.94) Yauhen Tsurkin (51.23) Artsiom Machekin (48.92) | 3:33.63 | NR |