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

The Men's 4 × 100 metre freestyle relay competition of the 2018 FINA World Swimming Championships (25 m) was held on 11 December 2018.

## Records

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

| | Nation | Time | Location | Date |
| - | - | - | - | - |
| World record | United States | 3:03.30 | Manchester | 19 December 2009 |
| Championship record | France | 3:03.78 | Doha | 3 December 2014 |

The following new records were set during this competition

| Date | Event | Nation | Time | Record |
| - | - | - | - | - |
| 11 December | Final | United States | 3:03.03 | WR, CR |

## Results

### Heats

The heats were started on 11 December at 12:37.

| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| - | - | - | - | - | - | - |
| 1 | 1 | 4 | Russia | Evgeny Rylov (46.09) Ivan Kuzmenko (46.58) Mikhail Vekovishchev (46.32) Ivan Girev (46.17) | 3:05.16 | Q |
| 2 | 1 | 7 | Brazil | Matheus Santana (47.41) Marcelo Chierighini (46.52) Breno Correia (45.32) César Cielo (46.45) | 3:05.70 | Q, NR |
| 3 | 1 | 6 | United States | Ryan Held (45.82) Kyle DeCoursey (46.92) Michael Jensen (46.41) Matt Grevers (46.57) | 3:05.72 | Q |
| 4 | 2 | 3 | Italy | Santo Condorelli (47.23) Lorenzo Zazzeri (46.99) Davide Nardini (47.44) Alessandro Miressi (46.52) | 3:08.18 | Q |
| 5 | 1 | 5 | Japan | Katsumi Nakamura (46.54) Kaiya Seki (47.38) Kosuke Matsui (47.18) Fuyu Yoshida (47.16) | 3:08.26 | Q |
| 6 | 2 | 4 | Australia | Louis Townsend (47.03) Alexander Graham (46.94) Jack Gerrard (46.97) Thomas Fraser-Holmes (47.62) | 3:08.56 | Q |
| 7 | 2 | 2 | Belarus | Yauhen Tsurkin (47.85) Hryhory Pekarski (47.45) Mikita Tsmyh (48.81) Artsiom Machekin (47.41) | 3:11.52 | Q, NR |
| 8 | 2 | 5 | China | Hou Yujie (48.34) Cao Jiwen (47.48) He Junyi (48.17) Yu Hexin (47.98) | 3:11.97 | Q |
| 9 | 2 | 6 | Turkey | Hüseyin Emre Sakçı (47.97) Iskender Baslakov (48.28) Yalım Acımış (48.46) Kemal Arda Gürdal (47.55) | 3:12.26 | NR |
| 10 | 1 | 2 | Portugal | Miguel Nascimento (47.61) NR Gabriel Lopes (48.14) Diogo Carvalho (50.33) Alexis Santos (49.48) | 3:15.56 | NR |
| 11 | 2 | 7 | New Zealand | Daniel Hunter (48.06) Andrew Jeffcoat (48.92) Matthew Hyde (50.50) Wilrich Coetzee (48.98) | 3:16.46 | |
| 12 | 1 | 3 | Chinese Taipei | Lin Chien-liang (49.46) Huang Yen-hsin (49.00) Chuang Mu-lun (48.84) An Ting-yao (49.31) | 3:16.61 | |
| 13 | 2 | 1 | Bulgaria | Yordan Yanchev (49.02) Svetlozar Nikolov (49.88) Kaloyan Bratanov (50.10) Antani Ivanov (50.51) | 3:19.51 | NR |

### Final

The final was held on 11 December at 20:52.

| Rank | Lane | Nation | Swimmers | Time | Notes |
| - | - | - | - | - | - |
| | 3 | United States | Caeleb Dressel (45.66) Blake Pieroni (45.75) Michael Chadwick (45.86) Ryan Held (45.76) | 3:03.03 | WR |
| | 4 | Russia | Vladislav Grinev (46.38) Sergey Fesikov (46.21) Vladimir Morozov (45.06) Kliment Kolesnikov (45.46) | 3:03.11 | ER |
| | 5 | Brazil | Matheus Santana (46.83) Marcelo Chierighini (46.37) César Cielo (46.34) Breno Correia (45.61) | 3:05.15 | NR |
| 4 | 6 | Italy | Santo Condorelli (46.76) Alessandro Miressi (46.03) Marco Orsi (46.41) Lorenzo Zazzeri (46.00) | 3:05.20 | NR |
| 5 | 7 | Australia | Cameron McEvoy (46.28) Louis Townsend (46.85) Jack Gerrard (46.86) Alexander Graham (46.50) | 3:06.49 | |
| 6 | 2 | Japan | Katsumi Nakamura (46.22 NR) Kaiya Seki (46.87) Kosuke Matsui (46.92) Fuyu Yoshida (47.86) | 3:07.87 | |
| 7 | 8 | China | Hou Yujie (48.09) Cao Jiwen (46.96) He Junyi (47.54) Yu Hexin (47.96) | 3:10.55 | NR |
| 8 | 1 | Belarus | Yauhen Tsurkin (47.76) Hryhory Pekarski (47.07) Viktar Staselovich (48.33) Artsiom Machekin (47.43) | 3:10.59 | NR |
