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

The men's 200 metre butterfly competition at the 2023 World Aquatics Championships was held on 25 and 26 July 2023.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Kristóf Milák (HUN) | 1:50.34 | Budapest, Hungary | 21 June 2022 |
| Competition record | Kristóf Milák (HUN) | 1:50.34 | Budapest, Hungary | 21 June 2022 |

## Results
### Heats

The heats were started on 25 July at 11:13.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 4 | Tomoru Honda | Japan | 1:54.21 | Q |
| 2 | 3 | 1 | Arbidel González | Spain | 1:54.99 | Q, NR |
| 3 | 4 | 6 | Krzysztof Chmielewski | Poland | 1:55.02 | Q |
| 4 | 5 | 2 | Wang Kuan-hung | Chinese Taipei | 1:55.17 | Q |
| 5 | 5 | 6 | Alberto Razzetti | Italy | 1:55.35 | Q |
| 6 | 4 | 5 | Carson Foster | United States | 1:55.36 | Q |
| 7 | 4 | 4 | Léon Marchand | France | 1:55.46 | Q |
| 8 | 5 | 3 | Thomas Heilman | United States | 1:55.59 | Q |
| 9 | 3 | 6 | Niu Guangsheng | China | 1:55.69 | Q |
| 10 | 4 | 3 | Teppei Morimoto | Japan | 1:55.72 | Q |
| 11 | 3 | 7 | Denys Kesil | Ukraine | 1:55.75 | Q |
| 12 | 5 | 5 | Noè Ponti | Switzerland | 1:55.85 | Q |
| 13 | 3 | 5 | Ilya Kharun | Canada | 1:55.93 | Q |
| 14 | 3 | 3 | Richárd Márton | Hungary | 1:56.03 | Q |
| 15 | 3 | 2 | Lewis Clareburt | New Zealand | 1:56.23 | Q |
| 16 | 5 | 1 | Matthew Temple | Australia | 1:56.51 | Q, WD |
| 17 | 4 | 2 | Leonardo de Deus | Brazil | 1:56.79 | Q |
| 18 | 5 | 7 | Federico Burdisso | Italy | 1:56.86 | |
| 19 | 3 | 4 | Chen Juner | China | 1:56.87 | |
| 20 | 4 | 8 | Martin Espernberger | Austria | 1:57.36 | |
| 21 | 4 | 1 | Moon Seung-woo | South Korea | 1:57.79 | |
| 22 | 5 | 8 | Héctor Ruvalcaba | Mexico | 1:57.80 | |
| 23 | 5 | 0 | Sajan Prakash | India | 1:58.07 | |
| 24 | 4 | 7 | Kregor Zirk | Estonia | 1:58.69 | |
| 25 | 5 | 9 | Yeziel Morales | Puerto Rico | 1:59.10 | |
| 26 | 2 | 4 | Erick Gordillo | Guatemala | 1:59.96 | |
| 27 | 3 | 9 | Abdalla Nasr | Egypt | 2:00.17 | |
| 28 | 4 | 0 | Jorge Otaiza | Venezuela | 2:01.83 | |
| 29 | 3 | 0 | Navaphat Wongcharoen | Thailand | 2:03.05 | |
| 30 | 2 | 5 | Richard Nagy | Slovakia | 2:03.33 | |
| 31 | 2 | 6 | Simon Bachmann | Seychelles | 2:03.57 | |
| 32 | 2 | 3 | Diego Balbi | Peru | 2:03.61 | |
| 33 | 1 | 3 | Raekwon Noel | Guyana | 2:05.65 | NR |
| 34 | 2 | 7 | Gerald Hernández | Nicaragua | 2:07.28 | |
| 35 | 2 | 1 | Christian Jerome | Haiti | 2:08.54 | NR |
| 36 | 4 | 9 | Hồ Nguyễn Duy Khoa | Vietnam | 2:11.47 | |
| 37 | 2 | 8 | Ali Haidar | Kuwait | 2:13.97 | |
| 38 | 1 | 4 | Mohamed Rihan Shiham | Maldives | 2:32.93 | |
| | 1 | 5 | James Hendrix | Guam | DNS | DNS |
| | 2 | 2 | Salem Sabt | United Arab Emirates | DNS | DNS |
| | 3 | 8 | Jaouad Syoud | Algeria | DNS | DNS |

### Semifinals

The semifinals were held on 25 July at 21:33.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 3 | Carson Foster | United States | 1:53.85 | Q |
| 2 | 2 | 6 | Léon Marchand | France | 1:54.21 | Q |
| 3 | 2 | 1 | Ilya Kharun | Canada | 1:54.28 | Q, NR |
| 4 | 2 | 5 | Krzysztof Chmielewski | Poland | 1:54.36 | Q |
| 5 | 2 | 4 | Tomoru Honda | Japan | 1:54.43 | Q |
| 6 | 1 | 1 | Richárd Márton | Hungary | 1:54.54 | Q |
| 7 | 1 | 6 | Thomas Heilman | United States | 1:54.57 | Q |
| 8 | 1 | 5 | Wang Kuan-hung | Chinese Taipei | 1:54.97 | Q |
| 9 | 2 | 3 | Alberto Razzetti | Italy | 1:55.00 | |
| 10 | 1 | 2 | Teppei Morimoto | Japan | 1:55.36 | |
| 11 | 1 | 7 | Noè Ponti | Switzerland | 1:55.44 | |
| 12 | 1 | 4 | Arbidel González | Spain | 1:55.61 | |
| 13 | 2 | 8 | Lewis Clareburt | New Zealand | 1:56.44 | |
| 14 | 2 | 7 | Denys Kesil | Ukraine | 1:56.89 | |
| 15 | 2 | 2 | Niu Guangsheng | China | 1:57.51 | |
| 16 | 1 | 8 | Leonardo de Deus | Brazil | 1:57.94 | |

### Final

The final was held on 26 July at 20:53.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Léon Marchand | France | 1:52.43 | NR |
| | 6 | Krzysztof Chmielewski | Poland | 1:53.62 | |
| | 2 | Tomoru Honda | Japan | 1:53.66 | |
| 4 | 1 | Thomas Heilman | United States | 1:53.82 | |
| 4 | 3 | Ilya Kharun | Canada | 1:53.82 | NR |
| 6 | 4 | Carson Foster | United States | 1:54.74 | |
| 7 | 7 | Richárd Márton | Hungary | 1:55.02 | |
| 8 | 8 | Wang Kuan-hung | Chinese Taipei | 1:55.43 | |