# 2018 FINA World Swimming Championships (25 m) – Men's 200 metre butterfly

The men's 200 metre butterfly 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.
| | Name | Nation | Time | Location | Date |
| World record | Chad le Clos | South Africa | 1:48.56 | Singapore | 5 November 2013 |
| Championship record | Chad le Clos | South Africa | 1:48.61 | Doha, Qatar | 7 December 2014 |
The following records were established during the competition:
| Date | Event | Name | Nation | Time | Record |
| 11 December | Final | Daiya Seto | Japan | 1:48.24 | WR, CR |

## Results
### Heats

The heats were started at 10:23.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 4 | Daiya Seto | Japan | 1:49.88 | Q |
| 2 | 4 | 5 | Li Zhuhao | China | 1:51.28 | Q |
| 3 | 2 | 5 | Luiz Altamir Melo | Brazil | 1:51.31 | Q |
| 4 | 2 | 4 | Aleksandr Kharlanov | Russia | 1:51.58 | Q |
| 5 | 4 | 1 | Zach Harting | United States | 1:51.66 | Q |
| 6 | 4 | 0 | Antani Ivanov | Bulgaria | 1:51.81 | Q |
| 7 | 3 | 4 | Chad le Clos | South Africa | 1:51.90 | Q |
| 8 | 2 | 3 | Nic Brown | Australia | 1:52.15 | Q |
| 9 | 3 | 5 | Yuya Yajima | Japan | 1:52.62 | |
| 10 | 4 | 9 | Brendan Hyland | Ireland | 1:53.19 | |
| 11 | 2 | 2 | Sajan Prakash | India | 1:53.20 | |
| 12 | 3 | 3 | Tamás Kenderesi | Hungary | 1:53.59 | |
| 13 | 3 | 1 | Deividas Margevičius | Lithuania | 1:53.83 | |
| 14 | 2 | 6 | Bence Biczó | Hungary | 1:53.99 | |
| 15 | 4 | 2 | Ramon Klenz | Germany | 1:54.02 | |
| 16 | 3 | 7 | Federico Burdisso | Italy | 1:54.10 | |
| 17 | 4 | 8 | Wilrich Coetzee | New Zealand | 1:54.21 | |
| 18 | 4 | 3 | Leonardo de Deus | Brazil | 1:54.22 | |
| 19 | 2 | 8 | Erge Can Gezmiş | Turkey | 1:54.71 | |
| 20 | 4 | 6 | Wang Kuan-hung | Chinese Taipei | 1:55.16 | |
| 21 | 3 | 2 | Roman Shevliakov | Russia | 1:55.42 | |
| 22 | 2 | 7 | Nils Liess | Switzerland | 1:55.64 | |
| 23 | 3 | 6 | Kregor Zirk | Estonia | 1:55.69 | |
| 24 | 3 | 8 | Patrick Staber | Austria | 1:55.84 | |
| 25 | 2 | 1 | Denys Kesyl | Ukraine | 1:56.04 | |
| 26 | 3 | 0 | Joan Lluís Pons | Spain | 1:56.51 | |
| 27 | 1 | 4 | Luis Vega Torres | Cuba | 1:57.45 | |
| 28 | 2 | 9 | Richard Nagy | Slovakia | 1:57.96 | |
| 29 | 2 | 0 | Nicholas Lim | Hong Kong | 1:58.16 | |
| 30 | 1 | 5 | Jarod Arroyo | Puerto Rico | 1:58.22 | |
| 31 | 1 | 3 | Gabriel Araya | Chile | 1:59.53 | |
| 32 | 3 | 9 | Ayman Kelzi | Syria | 2:00.58 | |
| 33 | 1 | 8 | Nichita Bortnicov | Moldova | 2:01.30 | |
| 34 | 1 | 6 | Bryan Alvarez | Costa Rica | 2:01.57 | |
| 35 | 1 | 7 | Fernando Ponce | Guatemala | 2:04.91 | |
| 36 | 1 | 1 | Munzer Kabbara | Lebanon | 2:05.29 | |
| 37 | 1 | 2 | Zeniel Guzmán | Dominican Republic | 2:05.54 | |
| 38 | 1 | 0 | Yacob Al-Khulaifi | Qatar | 2:10.03 | |
| | 4 | 7 | Justin Wright | United States | DSQ | |

### Final

The final was held at 19:41.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Daiya Seto | Japan | 1:48.24 | WR |
| | 1 | Chad le Clos | South Africa | 1:48.32 | AF |
| | 5 | Li Zhuhao | China | 1:50.39 | NR |
| 4 | 6 | Aleksandr Kharlanov | Russia | 1:50.67 | |
| 5 | 2 | Zach Harting | United States | 1:51.57 | |
| 6 | 3 | Luiz Altamir Melo | Brazil | 1:51.99 | |
| 7 | 8 | Nic Brown | Australia | 1:52.10 | |
| 8 | 7 | Antani Ivanov | Bulgaria | 1:52.40 | |