# 2018 FINA World Swimming Championships (25 m) – Men's 50 metre butterfly

The Men's 50 metre butterfly competition of the 2018 FINA World Swimming Championships (25 m) was held on 14 and 15 December 2018 at the Hangzhou Olympic Sports Center.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record | Nicholas Santos | Brazil | 21.75 | Budapest | 6 October 2018 |
| Championship record | Chad le Clos | South Africa | 21.95 | Doha | 6 December 2014 |
The following new records were set during this competition:
| Date | Event | Name | Nation | Time | Record |
| 16 December | Final | Nicholas Santos | Brazil | 21.81 | CR |

## Results
### Heats

The heats were started at 9:52.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 11 | 4 | Nicholas Santos | Brazil | 22.41 | Q |
| 2 | 9 | 3 | Dylan Carter | Trinidad and Tobago | 22.53 | Q |
| 3 | 11 | 6 | Marius Kusch | Germany | 22.59 | Q |
| 4 | 10 | 4 | Chad le Clos | South Africa | 22.67 | Q |
| 5 | 10 | 3 | Takaya Yasue | Japan | 22.78 | Q |
| 6 | 9 | 6 | Mikhail Vekovishchev | Russia | 22.79 | Q |
| 6 | 10 | 2 | Ryan Coetzee | South Africa | 22.79 | Q |
| 8 | 10 | 5 | Yauhen Tsurkin | Belarus | 22.80 | Q |
| 9 | 9 | 5 | Takeshi Kawamoto | Japan | 22.83 | Q |
| 10 | 9 | 1 | Mehdy Metella | France | 22.86 | Q |
| 11 | 11 | 5 | Michael Andrew | United States | 22.93 | Q |
| 12 | 11 | 3 | Umitcan Gures | Turkey | 22.96 | Q |
| 13 | 10 | 1 | Matteo Rivolta | Italy | 23.02 | Q |
| 13 | 10 | 9 | Niksa Stojkovski | Norway | 23.02 | Q |
| 15 | 10 | 7 | Piero Codia | Italy | 23.03 | Q |
| 16 | 9 | 7 | Matheus Santana | Brazil | 23.08 | QSO |
| 16 | 11 | 7 | Riku Pöytäkivi | Finland | 23.08 | QSO |
| 18 | 10 | 6 | Deividas Margevičius | Lithuania | 23.10 | |
| 19 | 11 | 0 | Roman Shevliakov | Russia | 23.13 | |
| 20 | 9 | 0 | Hryhory Pekarski | Belarus | 23.14 | |
| 20 | 11 | 1 | Daniel Zaitsev | Estonia | 23.14 | |
| 22 | 11 | 8 | Konrad Czerniak | Poland | 23.19 | |
| 23 | 9 | 2 | Li Zhuhao | China | 23.21 | |
| 24 | 8 | 4 | Kristian Golomeev | Greece | 23.24 | |
| 25 | 11 | 9 | Damian Wierling | Germany | 23.26 | |
| 26 | 7 | 7 | Adilbek Mussin | Kazakhstan | 23.35 | |
| 26 | 11 | 2 | Jesse Puts | Netherlands | 23.35 | |
| 28 | 8 | 2 | Ben Hockin | Paraguay | 23.37 | |
| 29 | 8 | 3 | Cameron Jones | Australia | 23.40 | |
| 30 | 7 | 2 | Antani Ivanov | Bulgaria | 23.42 | |
| 31 | 9 | 8 | Wang Peng | China | 23.48 | |
| 32 | 8 | 5 | Catalin Ungur | Romania | 23.59 | |
| 33 | 8 | 6 | Julien Henx | Luxembourg | 23.63 | |
| 34 | 9 | 9 | Berk Ozkul | Turkey | 23.74 | |
| 35 | 8 | 0 | Adam Halas | Slovakia | 23.76 | |
| 36 | 8 | 1 | Heiko Gigler | Austria | 23.77 | |
| 37 | 7 | 0 | Alexandre Perreault | Canada | 23.80 | |
| 38 | 7 | 4 | Manuel Leuthard | Switzerland | 23.89 | |
| 39 | 6 | 3 | Esnaider Reales | Colombia | 23.96 | |
| 40 | 7 | 5 | Sajan Prakash | India | 23.97 | |
| 41 | 6 | 5 | Chao Man Hou | Macau | 24.04 | |
| 42 | 6 | 7 | Oliver Elliot | Chile | 24.06 | |
| 43 | 7 | 3 | Adi Mešetović | Bosnia and Herzegovina | 24.07 | |
| 44 | 8 | 8 | Christoffer Carlsen | Sweden | 24.17 | |
| 45 | 7 | 8 | Ralph Goveia | Zambia | 24.18 | |
| 45 | 10 | 0 | Andriy Khloptsov | Ukraine | 24.18 | |
| 47 | 6 | 4 | Ali Khalafalla | Egypt | 24.22 | |
| 47 | 8 | 7 | Cherantha de Silva | Sri Lanka | 24.22 | |
| 49 | 8 | 9 | Andrew James Digby | Thailand | 24.23 | |
| 50 | 6 | 9 | Abbas Qali | Kuwait | 24.43 | |
| 51 | 7 | 9 | Anthony Barbar | Lebanon | 24.48 | |
| 52 | 2 | 4 | Amini Fonua | Tonga | 24.50 | NR |
| 53 | 6 | 6 | Artur Barseghyan | Armenia | 24.55 | NR |
| 54 | 2 | 1 | Philip Adejumo | Nigeria | 24.58 | NR |
| 54 | 6 | 8 | N'Nhyn Fernander | Bahamas | 24.58 | |
| 56 | 5 | 4 | Bryan Alvaréz | Costa Rica | 24.73 | |
| 57 | 6 | 0 | Rafael Barreto | Philippines | 24.74 | |
| 57 | 6 | 1 | Noah Al-Khulaifi | Qatar | 24.74 | |
| 59 | 6 | 2 | Lin Chieh-liang | Chinese Taipei | 24.77 | |
| 60 | 2 | 0 | Jose Quintanilla | Bolivia | 24.86 | |
| 61 | 5 | 5 | Yousif Bu-Arish | Saudi Arabia | 25.10 | |
| 62 | 5 | 2 | Bernat Lomero | Andorra | 25.17 | NR |
| 63 | 5 | 3 | Vladislav Shuliko | Kyrgyzstan | 25.20 | NR |
| 64 | 2 | 5 | Md Mahamudun Nobi Nahid | Bangladesh | 25.25 | |
| 65 | 5 | 7 | Malcolm Richardson | Cook Islands | 25.49 | |
| 66 | 5 | 0 | Jayhan Odlum-Smith | Saint Lucia | 25.66 | |
| 67 | 2 | 8 | Mohammed Isam Sadeq Kazan | Iraq | 25.95 | |
| 68 | 4 | 3 | Nabeel Hatoum | Palestine | 26.10 | |
| 68 | 4 | 6 | R.A.B Mohamed | Kenya | 26.10 | |
| 70 | 1 | 6 | Ali Alkaabi | United Arab Emirates | 26.16 | |
| 71 | 4 | 2 | Collins Saliboko | Tanzania | 26.19 | |
| 72 | 5 | 8 | Davidson Vincent | Haiti | 26.38 | NR |
| 73 | 5 | 9 | Tryfonas Hadjichristoforou | Cyprus | 26.45 | |
| 74 | 4 | 4 | Isiaka Irankunda | Rwanda | 26.46 | |
| 75 | 4 | 5 | Dajenel Williams | Grenada | 26.52 | |
| 76 | 4 | 7 | Troy Pina | Cape Verde | 26.73 | |
| 77 | 2 | 3 | A Ahmed Ali Yusuf | Brunei | 26.85 | |
| 78 | 2 | 9 | Duran Alfonso | Honduras | 27.02 | |
| 79 | 1 | 2 | Nabil Ahmed Saleh | Uganda | 27.54 | |
| 80 | 4 | 1 | P.Y.D Poku-Dwumoh | Ghana | 27.68 | |
| 81 | 2 | 2 | Carel Irakoze | Burundi | 27.72 | |
| 82 | 2 | 6 | Fakhriddin Madkamov | Tajikistan | 27.73 | |
| 83 | 3 | 7 | Abobakr Abass | Sudan | 27.74 | |
| 84 | 3 | 0 | Anubhav Subba | Nepal | 27.95 | |
| 85 | 3 | 3 | Antonio Andrew Rodrigues | Guyana | 28.21 | |
| 86 | 4 | 8 | Simanga Dlamini | Eswatini | 28.54 | |
| 87 | 1 | 5 | Ratha Phin | Cambodia | 28.85 | |
| 88 | 3 | 6 | Achala Gekabel | Ethiopia | 29.22 | |
| 89 | 4 | 9 | Nelson Batallones | Northern Mariana Islands | 29.58 | |
| 90 | 3 | 1 | Albachir Mouctar | Niger | 29.88 | |
| 91 | 4 | 0 | Slava Sihannouvong | Laos | 29.99 | |
| 92 | 3 | 8 | Jack Parlee | Turks and Caicos Islands | 30.21 | |
| 93 | 3 | 5 | Jefferson Kpanou | Benin | 30.79 | |
| 94 | 3 | 9 | Joshua Wyse | Sierra Leone | 31.59 | |
| 95 | 3 | 4 | Daniel Ranis | Marshall Islands | 31.73 | |
| 96 | 2 | 7 | Ian Salaka | Malawi | 32.62 | |
| 97 | 1 | 4 | Jessy Misak | Vanuatu | 33.19 | |
| 98 | 1 | 3 | H.T.H. Baidar | Yemen | 34.20 | |
| | 5 | 6 | Thibaut Danho | Ivory Coast | DNS | |
| | 7 | 1 | Bradlee Ashby | New Zealand | DNS | |
| | 7 | 6 | Shane Ryan | Ireland | DNS | |
| | 10 | 8 | Caeleb Dressel | United States | DNS | |
| | 3 | 2 | Houssein Ibrahim | Djibouti | DSQ | |
| | 5 | 1 | Ljupcho Angelovski | Macedonia | DSQ | |

#### Swim-off

The swim-off was held on 14 December at 11:07.
| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Riku Pöytäkivi | Finland | 22.71 | Q |
| 2 | 4 | Matheus Santana | Brazil | 23.18 | |

### Semifinals

The semifinals were held at 19:33.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Chad le Clos | South Africa | 22.34 | Q |
| 2 | 3 | Mikhail Vekovishchev | Russia | 22.56 | Q |
| 3 | 4 | Dylan Carter | Trinidad and Tobago | 22.62 | Q |
| 4 | 7 | Umitcan Gures | Turkey | 22.82 | |
| 5 | 2 | Mehdy Metella | France | 22.83 | |
| 6 | 6 | Yauhen Tsurkin | Belarus | 22.84 | |
| 7 | 8 | Riku Pöytäkivi | Finland | 22.94 | |
| 8 | 1 | Niksa Stojkovski | Norway | 23.19 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Nicholas Santos | Brazil | 21.96 | Q |
| 2 | 5 | Marius Kusch | Germany | 22.44 | Q |
| 3 | 3 | Takaya Yasue | Japan | 22.52 | Q |
| 4 | 2 | Takeshi Kawamoto | Japan | 22.74 | Q |
| 5 | 6 | Ryan Coetzee | South Africa | 22.75 | Q |
| 6 | 8 | Piero Codia | Italy | 22.76 | NR |
| 7 | 1 | Matteo Rivolta | Italy | 22.79 | |
| 8 | 7 | Michael Andrew | United States | 22.81 | |

### Final

The final was held at 19:41.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Nicholas Santos | Brazil | 21.81 | CR |
| | 5 | Chad le Clos | South Africa | 21.97 | |
| | 7 | Dylan Carter | Trinidad and Tobago | 22.38 | NR |
| 4 | 3 | Marius Kusch | Germany | 22.40 | |
| 5 | 1 | Takeshi Kawamoto | Japan | 22.50 | |
| 6 | 2 | Mikhail Vekovishchev | Russia | 22.60 | |
| 6 | 6 | Takaya Yasue | Japan | 22.60 | |
| 8 | 8 | Ryan Coetzee | South Africa | 22.88 | |