# Swimming at the 2020 Summer Paralympics – Men's 100 metre butterfly

The Men's 100 metre butterfly swimming events for the 2020 Summer Paralympics took place at the Tokyo Aquatics Centre from August 25 to September 3, 2021. A total of seven events were contested over this distance.

## Schedule

| H | Heats | ½ | Semifinals | F | Final |
| Date | Wed 25 | Wed 25 | Thu 26 | Thu 26 | Fri 27 | Fri 27 | Sat 28 | Sat 28 | Sun 29 | Sun 29 | Mon 30 | Mon 30 | Tue 31 | Tue 31 | Wed 1 | Wed 1 | Thu 2 | Thu 2 | Fri 3 | Fri 3 |
| Event | M | E | M | E | M | E | M | E | M | E | M | E | M | E | M | E | M | E | M | E |
| S8 100m | | | | | | | | | | | | | | | | | | | H | F |
| S9 100m | | | | | | | | | | | | | | | | | H | F | | |
| S10 100m | | | | | | | | | | | | | H | F | | | | | | |
| S11 100m | | | | | | | | | | | | | | | | | | | H | F |
| S12 100m | | | | | | | | | | | | | | | | | | | H | F |
| S13 100m | H | F | | | | | | | | | | | | | | | | | | |
| S14 100m | H | F | | | | | | | | | | | | | | | | | | |

## Medal summary

The following is a summary of the medals that were awarded across all 100 metre butterfly events.
| Classification | Gold | Gold | Silver | Silver | Bronze | Bronze |
| S8 details | Robert Griswold United States | 1:02.03 | Yang Feng China | 1:03.20 | Denys Dubrov Ukraine | 1:03.23 |
| S9 details | William Martin Australia | 57.19 WR | Simone Barlaam Italy | 59.43 | Alexander Skaliukh RPC | 1:00.54 |
| S10 details | Maksym Krypak Ukraine | 54.15 WR | Stefano Raimondi Italy | 55.04 | Col Pearse Australia | 57.66 |
| S11 details | Keiichi Kimura Japan | 1:02.57 | Uchu Tomita Japan | 1:03.59 | Wendell Belarmino Pereira Brazil | 1:05.20 |
| S12 details | Raman Salei Azerbaijan | 57.81 | Stephen Clegg Great Britain | 57.87 | Roman Makarov RPC | 58.65 |
| S13 details | Ihar Boki Belarus | 53.80 PR | Oleksii Virchenko Ukraine | 56.16 | Islam Aslanov Uzbekistan | 57.12 |
| S14 details | Gabriel Bandeira Brazil | 54.76 PR | Reece Dunn Great Britain | 55.12 | Benjamin Hance Australia | 56.90 |

## Results

The following are the results of the finals only of each of the Men's 100 metre butterfly events in each of the classifications. Further details of each event, including where appropriate heats and semi finals results, are available on that event's dedicated page.

### S8

The S8 category is for swimmers who have a single amputation, or restrictive movement in their hip, knee and ankle joints.
The final in this classification took take place on 3 September 2021:
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Robert Griswold | United States | 1:02.03 | AM |
| | 3 | Yang Feng | China | 1:03.20 | |
| | 6 | Denys Dubrov | Ukraine | 1:03.23 | |
| 4 | 5 | Yang Guanglong | China | 1:03.26 | |
| 5 | 2 | Xu Haijiao | China | 1:03.42 | |
| 6 | 1 | Alberto Amodeo | Italy | 1:04.31 | |
| 7 | 7 | Luis Armando Andrade Guillen | Mexico | 1:04.55 | |
| 8 | 8 | Gabriel Cristiano Silva de Souza | Brazil | 1:05.38 | |

### S9

The S9 category is for swimmers who have joint restrictions in one leg, or double below-the-knee amputations.
The final in this classification took place on 2 September 2021:
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | William Martin | Australia | 57.19 | WR |
| | 5 | Simone Barlaam | Italy | 59.43 | |
| | 2 | Alexander Skaliukh | RPC | 1:00.54 | |
| 4 | 6 | Federico Morlacchi | Italy | 1:00.75 | |
| 5 | 7 | Timothy Hodge | Australia | 1:01.03 | |
| 6 | 3 | Jose Antonio Mari Alcaraz | Spain | 1:01.28 | |
| 7 | 8 | Yahor Shchalkanau | Belarus | 1:01.38 | |
| 8 | 1 | Malte Braunschweig | Germany | 1:02.95 | |

### S10

The S10 category is for swimmers who have minor physical impairments, for example, loss of one hand.
The final in this classification took place on 31 August 2021:
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Maksym Krypak | Ukraine | 54.15 | WR |
| | 5 | Stefano Raimondi | Italy | 55.04 | |
| | 3 | Col Pearse | Australia | 57.66 | |
| 4 | 8 | Florent Marais | France | 57.86 | |
| 5 | 2 | Alec Elliot | Canada | 58.44 | |
| 6 | 6 | Dmitry Grigoryev | RPC | 58.45 | |
| 7 | 7 | Riccardo Menciotti | Italy | 58.65 | |
| 8 | 1 | David Levecq | Spain | 59.12 | |

### S11

The S11 category is for swimmers who have severe visual impairments and have very low or no light perception, such as blindness, they are required to wear blackened goggles to compete. They use tappers when competing in swimming events.
The final in this classification took place on 3 September 2021:
| Rank | Lane | Name | Nationality | Time |
| | 4 | Keiichi Kimura | Japan | 1.02.57 |
| | 5 | Uchu Tomita | Japan | 1.03.59 |
| | 6 | Wendell Belarmino Pereira | Brazil | 1.05.20 |
| 4 | 2 | Rogier Dorsman | Netherlands | 1.05.67 |
| 5 | 2 | Matthew Cabraja | Canada | 1.05.97 |
| 6 | 7 | Viktor Smyrnov | Ukraine | 1.06.85 |
| 7 | 8 | Hua Dongdong | China | 1.09.16 |
| 8 | 1 | Yang Bozun | China | 1.09.23 |

### S12

The S12 category is for swimmers who have moderate visual impairment and have a visual field of less than 5 degrees radius. They are required to wear blackened goggles to compete. They may wish to use a tapper.
The final in this classification took place on 3 September 2021:
| Rank | Lane | Name | Nationality | Time |
| | 4 | Raman Salei | Azerbaijan | 57.81 |
| | 2 | Stephen Clegg | Great Britain | 57.87 |
| | 5 | Roman Makarov | RPC | 58.65 |
| 4 | 6 | Illia Yaremenko | Ukraine | 58.98 |
| 5 | 7 | Danylo Chufarov | Ukraine | 59.00 |
| 6 | 3 | Braedan Jason | Australia | 59.01 |
| 7 | 8 | Maksim Vashkevich | Belarus | 1.10.43 |
| 8 | 1 | Daniel Giraldo Correa | Colombia | 1.02.42 |

### S13

The S13 category is for swimmers who have minor visual impairment and have high visual acuity. They are required to wear blackened goggles to compete. They may wish to use a tapper.
The final in this classification took place on 25 August 2021:
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Ihar Boki | Belarus | 53.80 | PR |
| | 5 | Oleksii Virchenko | Ukraine | 56.16 | |
| | 3 | Islam Aslanov | Uzbekistan | 57.12 | |
| 4 | 6 | Alex Portal | France | 57.13 | |
| 5 | 2 | Muzaffar Tursunkhujaev | Uzbekistan | 57.44 | |
| 6 | 1 | Dzmitry Salei | Belarus | 58.15 | |
| 7 | 7 | Douglas Matera | Brazil | 58.53 | |
| 8 | 8 | Kyrylo Garashchenko | Ukraine | 58.63 | |

### S14

The S14 category is for swimmers who have an intellectual impairment.
The final in this classification took place on 25 August 2021:
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Gabriel Bandeira | Brazil | 54.76 | PR |
| | 4 | Reece Dunn | Great Britain | 55.12 | |
| | 6 | Benjamin Hance | Australia | 56.90 | |
| 4 | 2 | Naohide Yamaguchi | Japan | 57.11 | |
| 5 | 3 | Lawrence Sapp | United States | 57.36 | |
| 6 | 1 | Robert Isak Jónsson | Iceland | 58.06 | |
| 7 | 8 | Cho Won-sang | South Korea | 58.45 | |
| 8 | 7 | Ricky Betar | Australia | 58.62 | |