# Swimming at the 2017 Summer Universiade – Men's 100 metre butterfly

The Men's 100 metre butterfly competition at the 2017 Summer Universiade was held on 24 and 25 August 2017.

## Records

Prior to the competition, the existing world and Universiade records were as follows.
| World record | Michael Phelps (USA) | 49.82 | Rome, Italy | 1 August 2009 |
| Competition record | Jason Dunford (KEN) | 50.85 | Belgrade, Serbia | 9 July 2009 |

## Results
### Heats

The heats were held on 24 August at 9:32.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 9 | 2 | Aleksandr Sadovnikov | Russia | 52.43 | Q |
| 2 | 10 | 4 | Henrique Martins | Brazil | 52.51 | Q |
| 3 | 10 | 7 | Andrii Khloptsov | Ukraine | 52.52 | Q |
| 4 | 10 | 5 | Bence Pulai | Hungary | 52.62 | Q |
| 5 | 8 | 1 | Oleksii Ivanov | Ukraine | 52.80 | Q |
| 6 | 9 | 4 | Yuki Kobori | Japan | 52.85 | Q |
| 7 | 9 | 3 | Justin Lynch | United States | 52.89 | Q |
| 8 | 8 | 6 | Michał Poprawa | Poland | 53.00 | Q |
| 9 | 8 | 4 | Vinicius Lanza | Brazil | 53.03 | Q |
| 10 | 9 | 1 | Jan Šefl | Czech Republic | 53.14 | Q |
| 11 | 9 | 5 | Konrad Czerniak | Poland | 53.16 | Q |
| 12 | 8 | 5 | Nao Horomura | Japan | 53.21 | Q |
| 13 | 7 | 4 | Aleksandr Kudashev | Russia | 53.29 | Q |
| 13 | 10 | 2 | Zach Harting | United States | 53.29 | Q |
| 15 | 10 | 1 | Josiah Binnema | Canada | 53.34 | Q |
| 16 | 10 | 3 | Kaan Türker Ayar | Turkey | 53.40 | Q |
| 17 | 10 | 6 | Giacomo Carini | Italy | 53.46 | |
| 17 | 9 | 6 | Brayden McCarthy | Australia | 53.46 | |
| 19 | 7 | 3 | Brendan Hyland | Ireland | 53.49 | |
| 20 | 6 | 2 | Mateo Gonzalez | Mexico | 53.52 | |
| 20 | 8 | 3 | Long Gutiérrez | Mexico | 53.52 | |
| 22 | 7 | 2 | Ryan Coetzee | South Africa | 53.57 | |
| 23 | 8 | 2 | Marcus Schlesinger | Israel | 53.64 | |
| 24 | 9 | 7 | Stefanos Dimitriadis | Greece | 53.70 | |
| 25 | 7 | 7 | Conor Brines | Ireland | 53.75 | |
| 26 | 8 | 7 | Alexander Kunert | Germany | 53.77 | |
| 27 | 9 | 8 | Yahor Dodaleu | Belarus | 53.80 | |
| 28 | 7 | 5 | Paul Pijulet | France | 53.91 | |
| 29 | 6 | 3 | Cameron Brodie | Great Britain | 53.93 | |
| 30 | 5 | 8 | Joe Litchfield | Great Britain | 53.98 | |
| 31 | 7 | 8 | Jesper Björk | Sweden | 53.99 | |
| 32 | 10 | 8 | Tadas Duškinas | Lithuania | 53.99 | |
| 33 | 6 | 4 | Chu Chen-ping | Chinese Taipei | 54.09 | |
| 34 | 5 | 3 | Alard Basson | South Africa | 54.27 | |
| 35 | 7 | 6 | Paul Lemaire | France | 54.31 | |
| 36 | 6 | 5 | Lee Tae-gu | South Korea | 54.40 | |
| 37 | 6 | 6 | Laurent Bams | Netherlands | 54.54 | |
| 38 | 5 | 4 | Bence Biczó | Hungary | 54.63 | |
| 39 | 4 | 8 | Cevin Siim | Estonia | 54.73 | |
| 40 | 6 | 1 | Tomáš Havránek | Czech Republic | 55.17 | |
| 41 | 4 | 7 | Joshua Gold | Estonia | 55.20 | |
| 42 | 6 | 7 | Chou Wei-liang | Chinese Taipei | 55.21 | |
| 43 | 6 | 8 | David Arias | Colombia | 55.22 | |
| 44 | 5 | 1 | Nicolás Deferrari | Argentina | 55.26 | |
| 45 | 5 | 7 | Jin Yuli | China | 55.27 | |
| 46 | 4 | 4 | Fynn Minuth | Germany | 55.36 | |
| 47 | 7 | 1 | Sascha Subarsky | Austria | 55.47 | |
| 48 | 5 | 6 | Derick Ng | Hong Kong | 55.54 | |
| 49 | 4 | 5 | Adityastha Rai Wratsangka | Indonesia | 55.69 | |
| 50 | 5 | 2 | Vladimír Štefánik | Slovakia | 55.84 | |
| 51 | 4 | 6 | Zhang Shimeng | China | 55.85 | |
| 52 | 3 | 4 | Daniel Namir | Israel | 55.87 | |
| 53 | 5 | 5 | Michael Gunning | Jamaica | 55.92 | |
| 53 | 3 | 3 | Mahieddine Galdem | Algeria | 56.69 | |
| 55 | 4 | 3 | Muhammad Hamgari | Indonesia | 56.82 | |
| 56 | 3 | 6 | Jaakko Rautalin | Finland | 56.86 | |
| 57 | 4 | 2 | Ho Tin Long | Hong Kong | 56.89 | |
| 58 | 3 | 5 | Carlos Orihuela | Paraguay | 57.32 | |
| 59 | 2 | 3 | Lin Sizhuang | Macau | 58.26 | |
| 60 | 4 | 1 | Daniel Mitsumasu | Peru | 58.42 | |
| 61 | 3 | 2 | Janne Markkanen | Finland | 58.74 | |
| 62 | 2 | 4 | Lee Zheng Kai | Singapore | 59.77 | |
| 63 | 2 | 5 | Ho Wei Ming | Singapore | 1:00.20 | |
| 64 | 3 | 1 | Sherif Assi | Lebanon | 1:01.14 | |
| 65 | 2 | 2 | Jeffrey Galea | Malta | 1:02.95 | |
| 66 | 2 | 7 | Alexander Turnbull | Malta | 1:04.18 | |
| 67 | 1 | 4 | Aiman Al-Qasmi | Oman | 1:05.48 | |
| 68 | 3 | 8 | Leonard Licudo | Philippines | 1:05.81 | |
| 69 | 2 | 6 | Conrado Sacco | Paraguay | 1:08.58 | |
| 70 | 1 | 3 | Khalid Al-Jahdhami | Oman | 1:11.33 | |
| | 1 | 5 | Sunday Nwabogor | Nigeria | DNS | |
| | 2 | 1 | Godswill Archibong | Nigeria | DNS | |
| | 3 | 7 | Mohamed Chelbeb | Algeria | DNS | |
| | 8 | 8 | Nicholas Brown | Australia | DNS | |

### Semifinals

The semifinals were held on 24 August at 19:23.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Henrique Martins | Brazil | 52.16 | Q |
| 2 | 3 | Yuki Kobori | Japan | 52.33 | Q |
| 3 | 5 | Bence Pulai | Hungary | 52.57 | Q |
| 4 | 7 | Nao Horomura | Japan | 52.69 | |
| 5 | 6 | Michał Poprawa | Poland | 52.82 | |
| 6 | 1 | Aleksandr Kudashev | Russia | 53.14 | |
| 7 | 2 | Jan Šefl | Czech Republic | 53.29 | |
| 8 | 8 | Kaan Türker Ayar | Turkey | 53.57 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Andrii Khloptsov | Ukraine | 51.80 | Q |
| 1 | 3 | Oleksii Ivanov | Ukraine | 52.35 | Q |
| 3 | 7 | Konrad Czerniak | Poland | 52.40 | Q |
| 4 | 2 | Vinicius Lanza | Brazil | 52.62 | Q |
| 5 | 4 | Aleksandr Sadovnikov | Russia | 52.63 | Q |
| 6 | 1 | Zach Harting | United States | 53.23 | |
| 7 | 6 | Justin Lynch | United States | 53.27 | |
| 8 | 8 | Josiah Binnema | Canada | 53.77 | |

### Final

The final was held on 25 August at 19:19.
| Rank | Lane | Name | Nationality | Time |
| | 8 | Aleksandr Sadovnikov | Russia | 51.81 |
| | 4 | Andrii Khloptsov | Ukraine | 51.91 |
| | 5 | Henrique Martins | Brazil | 51.96 |
| 4 | 2 | Konrad Czerniak | Poland | 52.00 |
| 5 | 3 | Yuki Kobori | Japan | 52.09 |
| 6 | 7 | Bence Pulai | Hungary | 52.56 |
| 7 | 1 | Vinicius Lanza | Brazil | 52.59 |
| 8 | 6 | Oleksii Ivanov | Ukraine | 52.60 |