# Swimming at the 2017 World Aquatics Championships – Men's 50 metre butterfly

The Men's 50 metre butterfly competition at the 2017 World Championships was held on 23 and 24 July 2017.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Rafael Muñoz (ESP) | 22.43 | Málaga, Spain | 5 April 2009 |
| Competition record | Milorad Čavić (SRB) | 22.67 | Rome, Italy | 27 July 2009 |

## Results
### Heats

The heats were held on 23 July at 10:33.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 8 | 4 | Andriy Govorov | Ukraine | 22.92 | Q |
| 2 | 8 | 5 | Caeleb Dressel | United States | 22.97 | Q |
| 3 | 8 | 7 | Joseph Schooling | Singapore | 23.05 | Q, AS |
| 4 | 7 | 4 | Ben Proud | Great Britain | 23.11 | Q |
| 5 | 9 | 4 | Nicholas Santos | Brazil | 23.24 | Q |
| 6 | 9 | 5 | Henrique Martins | Brazil | 23.34 | Q |
| 7 | 7 | 3 | Tim Phillips | United States | 23.38 | Q |
| 8 | 9 | 3 | László Cseh | Hungary | 23.41 | Q |
| 9 | 9 | 6 | Konrad Czerniak | Poland | 23.42 | Q |
| 10 | 7 | 2 | Evgeny Sedov | Russia | 23.49 | Q |
| 11 | 7 | 6 | Piero Codia | Italy | 23.50 | Q |
| 12 | 8 | 8 | Sebastian Sabo | Serbia | 23.51 | Q |
| 13 | 9 | 1 | Mathys Goosen | Netherlands | 23.52 | Q, NR |
| 14 | 9 | 2 | Andriy Khloptsov | Ukraine | 23.54 | Q |
| 15 | 8 | 6 | Yauhen Tsurkin | Belarus | 23.55 | Q |
| 16 | 8 | 2 | Yahor Dodaleu | Belarus | 23.66 | Q |
| 17 | 7 | 5 | Oleg Kostin | Russia | 23.68 | |
| 18 | 5 | 4 | Luis Martínez | Guatemala | 23.71 | |
| 19 | 6 | 6 | Dylan Carter | Trinidad and Tobago | 23.73 | |
| 20 | 7 | 1 | Kristian Golomeev | Greece | 23.85 | |
| 21 | 8 | 3 | Li Zhuhao | China | 23.86 | |
| 22 | 7 | 7 | Shi Yang | China | 23.91 | |
| 22 | 9 | 7 | Riku Poytäkivi | Finland | 23.91 | |
| 24 | 6 | 5 | Benjamin Hockin | Paraguay | 23.93 | |
| 25 | 9 | 0 | Daniel Zaitsev | Estonia | 23.94 | |
| 26 | 7 | 0 | Santiago Grassi | Argentina | 23.99 | |
| 27 | 7 | 9 | Marcus Schlesinger | Israel | 24.00 | |
| 28 | 7 | 8 | Damian Wierling | Germany | 24.09 | |
| 28 | 9 | 9 | Jan Šefl | Czech Republic | 24.09 | |
| 30 | 8 | 1 | Tadas Duškinas | Lithuania | 24.10 | |
| 31 | 8 | 0 | Adilbek Mussin | Kazakhstan | 24.13 | |
| 32 | 8 | 9 | Douglas Erasmus | South Africa | 24.17 | |
| 33 | 9 | 8 | David Morgan | Australia | 24.19 | |
| 34 | 6 | 3 | Artyom Kozlyuk | Uzbekistan | 24.20 | |
| 35 | 6 | 1 | Omar Eissa | Egypt | 24.43 | |
| 36 | 6 | 4 | Yang Jung-doo | South Korea | 24.45 | |
| 37 | 5 | 5 | Josiah Binnema | Canada | 24.50 | |
| 38 | 6 | 9 | Antani Ivanov | Bulgaria | 24.54 | |
| 39 | 6 | 8 | Ralph Goveia | Zambia | 24.56 | |
| 40 | 5 | 2 | Adi Mešetović | Bosnia and Herzegovina | 24.58 | |
| 41 | 6 | 7 | Justin Plaschka | Jamaica | 24.63 | |
| 41 | 6 | 0 | Nikolajs Maskaļenko | Latvia | 24.63 | |
| 43 | 6 | 2 | Glenn Victor Sutanto | Indonesia | 24.65 | |
| 44 | 5 | 8 | Kaan Ayar | Turkey | 24.73 | |
| 45 | 5 | 3 | Pavel Izbisciuc | Moldova | 24.80 | |
| 46 | 4 | 4 | Mehdi Ansari | Iran | 25.02 | |
| 47 | 5 | 1 | Bryan Alvaréz | Costa Rica | 25.06 | |
| 48 | 2 | 6 | Issa Mohamed | Kenya | 25.12 | |
| 49 | 5 | 9 | Cherantha de Silva | Sri Lanka | 25.15 | |
| 50 | 5 | 6 | Anthony Barbar | Lebanon | 25.17 | |
| 51 | 4 | 5 | N'Nhyn Fernander | Bahamas | 25.20 | |
| 52 | 5 | 7 | Oliver Elliot | Chile | 25.23 | |
| 53 | 4 | 3 | Boško Radulović | Montenegro | 25.24 | |
| 54 | 4 | 6 | José Alberto Quintanilla | Bolivia | 25.35 | |
| 55 | 5 | 0 | Nazim Belkhodja | Algeria | 25.43 | |
| 56 | 1 | 7 | Thibaut Danho | Ivory Coast | 25.74 | |
| 57 | 4 | 1 | Stefano Mitchell | Antigua and Barbuda | 25.98 | |
| 58 | 4 | 7 | Narang Pornsiriporn | Thailand | 25.99 | |
| 59 | 2 | 4 | Yellow Yeiyah | Nigeria | 26.11 | |
| 60 | 3 | 7 | Abdullah Al-Doori | Iraq | 26.28 | |
| 61 | 2 | 2 | Daniel Francisco | Angola | 26.33 | |
| 62 | 2 | 8 | Denilson da Costa | Mozambique | 26.35 | |
| 63 | 4 | 8 | Hilal Hemed Hilal | Tanzania | 26.40 | |
| 64 | 4 | 0 | Vahan Mkhitaryan | Armenia | 26.44 | |
| 65 | 4 | 9 | George Jabbour | Honduras | 26.69 | |
| 66 | 3 | 8 | Myagmaryn Delgerkhüü | Mongolia | 26.95 | |
| 67 | 3 | 4 | Jayhan Odlum-Smith | Saint Lucia | 26.99 | |
| 68 | 3 | 0 | Adam Moncherry | Seychelles | 27.23 | |
| 69 | 3 | 9 | Thol Thoeun | Cambodia | 27.45 | |
| 70 | 3 | 5 | Lum Zhaveli | Kosovo | 27.47 | |
| 71 | 1 | 4 | Joseph Denobrega | Guyana | 27.50 | |
| 72 | 1 | 3 | Belly-Cresus Ganira | Burundi | 27.52 | |
| 73 | 3 | 6 | Kaleo Kihleng | Micronesia | 27.98 | |
| 74 | 1 | 0 | Anubhav Subba | Nepal | 28.26 | |
| 75 | 3 | 1 | Ismah Serunjoji | Uganda | 28.57 | |
| 76 | 1 | 5 | Albachir Mouctar | Niger | 29.63 | |
| 77 | 2 | 5 | Slava Sihanouvong | Laos | 29.81 | |
| 78 | 1 | 6 | Papy Dossous | Haiti | 30.08 | |
| 79 | 2 | 1 | Athoumane Solihi | Comoros | 30.53 | |
| 80 | 2 | 7 | Andrew Lapuka | Tonga | 30.59 | |
| 81 | 1 | 2 | Osman Kamara | Sierra Leone | 33.70 | |
| | 1 | 1 | Momodou Saine | Gambia | DNS | DNS |
| | 1 | 8 | Abeiku Jackson | Ghana | DNS | DNS |
| | 2 | 3 | Ruslan Nazarov | Turkmenistan | DNS | DNS |
| | 2 | 0 | Mohammad Rajabi | Afghanistan | DNS | DNS |
| | 2 | 9 | Alpha Diallo | Guinea | DNS | DNS |
| | 3 | 3 | Yaaqoub Al-Saadi | United Arab Emirates | DNS | DNS |
| | 3 | 2 | Dillon Gooding | Saint Vincent and the Grenadines | DSQ | DSQ |
| | 4 | 2 | Oumar Toure | Mali | DSQ | DSQ |

### Semifinals

The semifinals were held on 23 July at 17:53.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Caeleb Dressel | United States | 22.76 | Q, NR |
| 2 | 5 | Ben Proud | Great Britain | 22.92 | Q |
| 3 | 3 | Henrique Martins | Brazil | 23.13 | Q |
| 4 | 1 | Andriy Khloptsov | Ukraine | 23.31 | Q, WJ |
| 5 | 6 | László Cseh | Hungary | 23.51 | |
| 6 | 7 | Sebastian Sabo | Serbia | 23.54 | |
| 7 | 8 | Yahor Dodaleu | Belarus | 23.71 | |
| 8 | 2 | Evgeny Sedov | Russia | 23.72 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Andriy Govorov | Ukraine | 22.77 | Q |
| 2 | 3 | Nicholas Santos | Brazil | 22.84 | Q |
| 3 | 5 | Joseph Schooling | Singapore | 22.93 | Q, AS |
| 4 | 6 | Tim Phillips | United States | 23.25 | Q |
| 5 | 2 | Konrad Czerniak | Poland | 23.37 | |
| 6 | 7 | Piero Codia | Italy | 23.41 | |
| 7 | 1 | Mathys Goosen | Netherlands | 23.52 | =NR |
| 8 | 8 | Yauhen Tsurkin | Belarus | 23.62 | |

### Final

The final was held on 24 July at 18:17.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 6 | Ben Proud | Great Britain | 22.75 | NR |
| | 3 | Nicholas Santos | Brazil | 22.79 | |
| | 5 | Andriy Govorov | Ukraine | 22.84 | |
| 4 | 4 | Caeleb Dressel | United States | 22.89 | |
| 5 | 2 | Joseph Schooling | Singapore | 22.95 | |
| 6 | 7 | Henrique Martins | Brazil | 23.14 | |
| 7 | 8 | Andriy Khloptsov | Ukraine | 23.31 | |
| 8 | 1 | Tim Phillips | United States | 23.38 | |