# Swimming at the 2023 World Aquatics Championships – Men's 200 metre breaststroke

The men's 200 metre breaststroke competition at the 2023 World Aquatics Championships was held on 27 and 28 July 2023.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Zac Stubblety-Cook (AUS) | 2:05.95 | Adelaide, Australia | 19 May 2022 |
| Competition record | Anton Chupkov (RUS) | 2:06.12 | Gwangju, South Korea | 26 July 2019 |
The following new records were set during this competition.
| Date | Event | Name | Nationality | Time | Record |
| 28 July | Final | Qin Haiyang | China | 2:05.48 | WR |

## Results
### Heats

The heats were started on 27 July at 11:28.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 4 | Zac Stubblety-Cook | Australia | 2:08.98 | Q |
| 2 | 3 | 6 | Caspar Corbeau | Netherlands | 2:09.29 | Q |
| 3 | 5 | 5 | Matthew Fallon | United States | 2:09.32 | Q |
| 4 | 3 | 2 | Aleksas Savickas | Lithuania | 2:09.66 | Q |
| 5 | 3 | 4 | Qin Haiyang | China | 2:09.86 | Q |
| 6 | 4 | 3 | Josh Matheny | United States | 2:09.90 | Q |
| 7 | 4 | 6 | Dong Zhihao | China | 2:10.06 | Q |
| 8 | 4 | 5 | Ippei Watanabe | Japan | 2:10.11 | Q |
| 9 | 5 | 6 | Anton McKee | Iceland | 2:10.29 | Q |
| 10 | 5 | 3 | Arno Kamminga | Netherlands | 2:10.47 | Q |
| 11 | 3 | 3 | Erik Persson | Sweden | 2:10.51 | Q |
| 11 | 5 | 7 | Antoine Marc | France | 2:10.51 | Q |
| 13 | 4 | 8 | Lyubomir Epitropov | Bulgaria | 2:10.76 | Q |
| 14 | 5 | 2 | Matti Mattsson | Finland | 2:11.00 | Q |
| 15 | 3 | 5 | Shoma Sato | Japan | 2:11.03 | Q |
| 16 | 4 | 9 | Maksym Ovchinnikov | Ukraine | 2:11.71 | Q |
| 17 | 4 | 7 | Dawid Wiekiera | Poland | 2:11.92 | |
| 18 | 2 | 5 | Darragh Greene | Ireland | 2:12.21 | |
| 19 | 3 | 1 | Christopher Rothbauer | Austria | 2:12.29 | |
| 20 | 3 | 0 | Adam John Chillingworth | Hong Kong | 2:12.30 | |
| 21 | 2 | 2 | Ron Polonsky | Israel | 2:12.34 | |
| 22 | 4 | 2 | Miguel de Lara | Mexico | 2:12.40 | |
| 23 | 5 | 1 | Greg Butler | Great Britain | 2:12.52 | |
| 24 | 5 | 8 | Noah De Schryver | Belgium | 2:12.63 | |
| 25 | 5 | 9 | Berkay Ömer Öğretir | Turkey | 2:12.65 | |
| 26 | 3 | 7 | Cho Sung-jae | South Korea | 2:12.77 | |
| 27 | 5 | 0 | Amro Al-Wir | Jordan | 2:12.90 | |
| 28 | 4 | 1 | Carles Coll Martí | Spain | 2:13.09 | |
| 29 | 2 | 3 | Joshua Gilbert | New Zealand | 2:13.59 | |
| 30 | 4 | 0 | Brayden Taivassalo | Canada | 2:13.81 | |
| 31 | 3 | 9 | Maximillian Wei Ang | Singapore | 2:14.63 | |
| 32 | 2 | 6 | Daniils Bobrovs | Latvia | 2:15.95 | |
| 33 | 2 | 7 | Tyler Christianson | Panama | 2:17.43 | |
| 34 | 2 | 4 | Phạm Thanh Bảo | Vietnam | 2:17.89 | |
| 35 | 2 | 9 | Liam Davis | Zimbabwe | 2:18.45 | |
| 36 | 2 | 1 | Constantin Malachi | Moldova | 2:18.87 | |
| 37 | 2 | 8 | Julio Horrego | Honduras | 2:20.70 | |
| 38 | 2 | 0 | Adriel Sanes | U.S. Virgin Islands | 2:22.20 | |
| 39 | 1 | 3 | Luis Sebastian Weekes | Barbados | 2:22.94 | |
| 40 | 1 | 5 | Jonathan Chung Yee | Mauritius | 2:23.21 | |
| 41 | 1 | 4 | Abdulaziz Al-Obaidly | Qatar | 2:24.01 | |
| 42 | 1 | 6 | Andrej Stojanovski | North Macedonia | 2:25.40 | |
| 43 | 1 | 2 | Bransly Dirksz | Aruba | 2:28.73 | |
| | 4 | 4 | Léon Marchand | France | Did not start | Did not start |
| | 3 | 8 | Denis Petrashov | Kyrgyzstan | Disqualified | Disqualified |

### Semifinals

The semifinals were held on 27 July at 20:43.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Zac Stubblety-Cook | Australia | 2:07.27 | Q |
| 2 | 2 | 3 | Qin Haiyang | China | 2:07.70 | Q |
| 3 | 2 | 5 | Matthew Fallon | United States | 2:07.90 | Q |
| 4 | 2 | 6 | Dong Zhihao | China | 2:08.47 | Q, WJ |
| 5 | 1 | 4 | Caspar Corbeau | Netherlands | 2:08.49 | Q |
| 6 | 1 | 3 | Josh Matheny | United States | 2:09.04 | Q |
| 7 | 2 | 2 | Anton McKee | Iceland | 2:09.19 | Q |
| 8 | 1 | 6 | Ippei Watanabe | Japan | 2:09.50 | Q |
| 9 | 2 | 7 | Erik Persson | Sweden | 2:09.89 | |
| 10 | 1 | 1 | Matti Mattsson | Finland | 2:09.93 | |
| 11 | 1 | 5 | Aleksas Savickas | Lithuania | 2:10.16 | |
| 12 | 1 | 2 | Arno Kamminga | Netherlands | 2:10.57 | |
| 13 | 1 | 7 | Antoine Marc | France | 2:10.66 | |
| 14 | 2 | 8 | Shoma Sato | Japan | 2:10.72 | |
| 15 | 2 | 1 | Lyubomir Epitropov | Bulgaria | 2:11.28 | |
| 16 | 1 | 8 | Maksym Ovchinnikov | Ukraine | 2:11.95 | |

### Final

The final was held on 28 July at 21:24.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Qin Haiyang | China | 2:05.48 | WR |
| | 4 | Zac Stubblety-Cook | Australia | 2:06.40 | |
| | 3 | Matthew Fallon | United States | 2:07.74 | |
| 4 | 6 | Dong Zhihao | China | 2:08.04 | WJ |
| 5 | 2 | Caspar Corbeau | Netherlands | 2:08.42 | |
| 6 | 8 | Ippei Watanabe | Japan | 2:08.78 | |
| 7 | 1 | Anton McKee | Iceland | 2:09.50 | |
| 8 | 7 | Josh Matheny | United States | 2:10.41 | |