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

The Men's 4 × 100 metre freestyle relay competition at the 2017 World Championships was held on 23 July 2017.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | United States | 3:08.24 | Beijing, China | 11 August 2008 |
| Competition record | United States | 3:09.21 | Rome, Italy | 26 July 2009 |

## Results
### Heats

The heats were held at 11:50.
| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 1 | 5 | Brazil | Gabriel Santos (48.84) Marcelo Chierighini (47.75) César Cielo (48.15) Bruno Fratus (47.60) | 3:12.34 | Q |
| 2 | 1 | 4 | Australia | Cameron McEvoy (48.04) Zac Incerti (48.62) Alexander Graham (48.28) Jack Cartwright (47.51) | 3:12.45 | Q |
| 3 | 2 | 4 | United States | Blake Pieroni (48.40) Michael Chadwick (48.74) Zach Apple (48.16) Townley Haas (47.60) | 3:12.90 | Q |
| 4 | 2 | 6 | Italy | Luca Dotto (49.05) Ivano Vendrame (47.85) Alessandro Miressi (47.94) Filippo Magnini (48.42) | 3:13.26 | Q |
| 5 | 2 | 2 | Hungary | Dominik Kozma (48.61) Nándor Németh (48.52) Péter Holoda (48.08) Richárd Bohus (48.07) | 3:13.28 | Q, NR |
| 6 | 2 | 5 | Russia | Aleksandr Popkov (49.05) Nikita Korolev (48.43) Nikita Lobintsev (47.96) Vladimir Morozov (48.40) | 3:13.84 | Q |
| 7 | 1 | 3 | Japan | Katsumi Nakamura (48.71) Shinri Shioura (48.40) Katsuhiro Matsumoto (48.48) Junya Koga (49.23) | 3:14.82 | Q |
| 8 | 2 | 3 | Canada | Yuri Kisil (48.88) Markus Thormeyer (48.50) Javier Acevedo (48.43) Carson Olafson (49.07) | 3:14.88 | Q |
| 9 | 2 | 0 | Serbia | Velimir Stjepanović (48.77) Sebastian Sabo (48.60) Ivan Lenđer (48.87) Andrej Barna (49.40) | 3:15.64 | NR |
| 10 | 1 | 9 | Netherlands | Kyle Stolk (49.40) Stan Pijnenburg (48.91) Ben Schwietert (48.97) Jesse Puts (48.81) | 3:16.09 | |
| 11 | 1 | 6 | Greece | Apostolos Christou (49.36) Odysseus Meladinis (49.65) Christos Katrantzis (50.04) Kristian Golomeev (47.87) | 3:16.92 | |
| 12 | 2 | 7 | South Africa | Douglas Erasmus (49.99) Clayton Jimmie (49.64) Myles Brown (48.71) Zane Waddell (49.07) | 3:17.41 | |
| 13 | 1 | 8 | China | Lin Yongqing (49.57) Yu Hexin (48.97) Cao Jiwen (49.53) Ma Tianchi (49.62) | 3:17.69 | |
| 14 | 1 | 0 | New Zealand | Matthew Stanley (49.58) Sam Perry (49.35) Corey Main (49.22) Daniel Hunter (49.59) | 3:17.74 | |
| 15 | 1 | 7 | Egypt | Ali Khalafalla (49.80) Mohamed Samy (48.89) Youssef Abdalla (50.27) Mohamed Hussein (49.27) | 3:18.23 | NR |
| 16 | 1 | 2 | Belarus | Artsiom Machekin (49.43) Viktar Krasochka (49.22) Viktar Staselovich (50.55) Anton Latkin (50.42) | 3:19.62 | |
| 17 | 2 | 9 | Israel | Liran Konovalov (50.48) Yakov Toumarkin (50.00) Denis Loktev (50.39) Tomer Frankel (50.36) | 3:21.23 | |
| 18 | 2 | 8 | Latvia | Uvis Kalniņš (50.15) Daniils Bobrovs (52.36) Nikolajs Maskaļenko (51.32) Girts Feldbergs (50.57) | 3:24.40 | NR |
| 19 | 2 | 1 | Uzbekistan | Aleksey Tarasenko (51.45) Artyom Kozlyuk (50.96) Daniil Bukin (52.74) Khurshidjon Tursunov (49.95) | 3:25.10 | |
| 20 | 1 | 1 | Paraguay | Charles Hockin (50.99) Willian Vallejos (52.78) Matias Lopez (52.06) Benjamin Hockin (50.15) | 3:25.98 | |

### Final

The final was held at 18:52.
| Rank | Lane | Nation | Swimmers | Time | Notes |
| | 3 | United States | Caeleb Dressel (47.26 NR) Townley Haas (47.46) Blake Pieroni (48.09) Nathan Adrian (47.25) | 3:10.06 | |
| | 4 | Brazil | Gabriel Santos (48.30) Marcelo Chierighini (46.85) César Cielo (48.01) Bruno Fratus (47.18) | 3:10.34 | SA |
| | 2 | Hungary | Dominik Kozma (48.26 NR) Nándor Németh (48.04) Péter Holoda (48.48) Richárd Bohus (47.21) | 3:11.99 | NR |
| 4 | 7 | Russia | Danila Izotov (48.98) Vladimir Morozov (47.52) Nikita Lobintsev (48.09) Nikita Korolev (47.99) | 3:12.58 | |
| 5 | 1 | Japan | Katsumi Nakamura (48.60) Shinri Shioura (48.11) Katsuhiro Matsumoto (48.31) Junya Koga (48.63) | 3:13.65 | NR |
| 6 | 8 | Canada | Yuri Kisil (48.66) Markus Thormeyer (48.51) Javier Acevedo (49.03) Carson Olafson (49.05) | 3:15.25 | |
| | 5 | Australia | Jack Cartwright (48.34) Zac Incerti (48.28) Cameron McEvoy (48.04) Alexander Graham | DSQ | DSQ |
| | 6 | Italy | Luca Dotto (48.64) Ivano Vendrame Alessandro Miressi Filippo Magnini | DSQ | DSQ |