2021 FINA World Swimming Championships (25 m) – Men's 4 × 200 metre freestyle relay
# 2021 FINA World Swimming Championships (25 m) – Men's 4 × 200 metre freestyle relay

The Men's 4 × 200 metre freestyle relay competition of the 2021 FINA World Swimming Championships (25 m) was held on 19 December 2021.

## Records

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

| World record | Brazil (BRA) | 6:46.81 | Hangzhou, China | 14 December 2018 |
| - | - | - | - | - |
| Competition record | Brazil (BRA) | 6:46.81 | Hangzhou, China | 14 December 2018 |

## Results

### Heats

The heats were started at 11:03.

| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| - | - | - | - | - | - | - |
| 1 | 1 | 4 | Russian Swimming Federation | Nikolay Snegirev (1:44.06) Ivan Girev (1:43.25) Daniil Shatalov (1:44.30) Mikhail Vekovishchev (1:43.22) | 6:54.83 | Q |
| 2 | 1 | 5 | Italy | Alberto Razzetti (1:43.01) Filippo Megli (1:43.44) Marco De Tullio (1:45.06) Matteo Lamberti (1:45.01) | 6:56.52 | Q |
| 3 | 1 | 3 | Brazil | Breno Correia (1:43.23) Murilo Sartori (1:43.81) Kaique Alves (1:44.38) Leonardo Coelho Santos (1:45.14) | 6:56.56 | Q |
| 4 | 2 | 3 | China | Hong Jinquan (1:45.10) Pan Zhanle (1:44.66) Zhang Ziyang (1:45.70) Chen Ende (1:44.73) | 7:00.19 | Q |
| 5 | 1 | 1 | Norway | Tomoe Hvas (1:44.18 NR) Markus Lie (1:44.96) Henrik Christiansen (1:45.56) Jon Jøntvedt (1:46.33) | 7:01.03 | Q, NR |
| 6 | 2 | 6 | Ireland | Jack McMillan (1:42.98) Robert Powell (1:47.41) Finn McGeever (1:45.98) Jordan Sloan (1:45.98) | 7:02.35 | Q, NR |
| 7 | 2 | 5 | United States | Trenton Julian (1:43.33) Hunter Tapp (1:47.77) Zach Harting (1:46.16) Carson Foster (1:45.62) | 7:02.88 | Q |
| 8 | 2 | 2 | Turkey | Baturalp Ünlü (1:45.18) Efe Turan (1:46.92) Mert Kılavuz (1:49.61) Berke Saka (1:48.18) | 7:09.89 | Q |
| 9 | 1 | 2 | Hong Kong | Cheuk Ming Ho (1:46.60) Ng Yan Kin (1:54.21) Ho Tin Long (1:55.03) Michael Ng (1:55.70) | 7:31.54 | |
| 10 | 2 | 7 | Kuwait | Waleed Abdulrazzaq (1:52.60) Faisal Al-Tannak (1:56.58) Mashari Al-Samhan (1:57.93) Sauod Al-Shamroukh (1:55.53) | 7:42.64 | |
| 11 | 1 | 7 | Vietnam | Phạm Thanh Bảo (2:00.53) Hồ Nguyễn Duy Khoa (1:54.33) Nguyễn Hữu Kim Sơn (1:52.46) Trần Hưng Nguyên (1:57.52) | 7:44.84 | |
| | 1 | 6 | Singapore | | DNS | |
| | 2 | 1 | Bulgaria | | DNS | |
| | 2 | 4 | Great Britain | | DNS | |

### Final

The final was held at 19:58.

| Rank | Lane | Nation | Swimmers | Time | Notes |
| - | - | - | - | - | - |
| | 1 | United States | Kieran Smith (1:41.79) Trenton Julian (1:41.35) Carson Foster (1:41.65) Ryan Held (1:42.21) | 6:47.00 | NR |
| | 4 | Russian Swimming Federation | Vladislav Grinev (1:43.18) Aleksandr Shchegolev (1:40.86) Mikhail Vekovishchev (1:42.16) Ivan Girev (1:42.92) | 6:49.12 | |
| | 3 | Brazil | Fernando Scheffer (1:42.51) Murilo Sartori (1:42.07) Kaique Alves (1:43.15) Breno Correia (1:41.87) | 6:49.60 | |
| 4 | 5 | Italy | Matteo Ciampi (1:42.93) Thomas Ceccon (1:44.23) Filippo Megli (1:42.99) Alberto Razzetti (1:41.33) | 6:51.48 | NR |
| 5 | 6 | China | Hong Jinquan (1:45.44) Pan Zhanle (1:43.12) Zhang Ziyang (1:44.53) Chen Ende (1:45.45) | 6:58.54 | |
| 6 | 7 | Ireland | Jack McMillan (1:42.84) Jordan Sloan (1:44.94) Finn McGeever (1:45.84) Robert Powell (1:45.92) | 6:59.54 | NR |
| 7 | 2 | Norway | Tomoe Hvas (1:44.51) Markus Lie (1:44.37) Henrik Christiansen (1:45.08) Jon Jøntvedt (1:47.27) | 7:01.23 | |
| 8 | 8 | Turkey | Baturalp Ünlü (1:44.25) Efe Turan (1:47.12) Mert Kılavuz (1:48.41) Berke Saka (1:47.55) | 7:07.33 | NR |
