# Swimming at the 2020 European Aquatics Championships – Men's 100 metre breaststroke

The Men's 100 metre breaststroke competition of the 2020 European Aquatics Championships was held on 17 and 18 May 2021.

## Records

Before the competition, the existing world, European and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record European record | Adam Peaty | Great Britain | 56.88 | Gwangju | 21 July 2019 |
| Championship record | Adam Peaty | Great Britain | 57.10 | Glasgow | 4 August 2018 |

## Results
### Heats

The heats were started on 17 May at 11:18.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 7 | 4 | Adam Peaty | Great Britain | 58.26 | Q |
| 2 | 5 | 4 | Ilya Shymanovich | Belarus | 58.46 | Q |
| 3 | 7 | 5 | Nicolò Martinenghi | Italy | 58.88 | Q |
| 4 | 6 | 4 | Arno Kamminga | Netherlands | 59.09 | Q |
| 5 | 5 | 5 | Anton Chupkov | Russia | 59.41 | Q |
| 6 | 7 | 3 | Kirill Prigoda | Russia | 59.43 | Q |
| 7 | 7 | 7 | Alessandro Pinzuti | Italy | 59.45 | Q |
| 8 | 5 | 2 | Andrius Šidlauskas | Lithuania | 59.54 | Q |
| 9 | 6 | 5 | James Wilby | Great Britain | 59.55 | Q |
| 10 | 5 | 6 | Berkay Ömer Öğretir | Turkey | 59.63 | Q |
| 11 | 6 | 2 | Federico Poggio | Italy | 59.67 | |
| 12 | 6 | 6 | Lucas Matzerath | Germany | 59.87 | Q |
| 13 | 6 | 3 | Tobias Bjerg | Denmark | 59.95 | Q |
| 14 | 5 | 0 | Matti Mattsson | Finland | 1:00.04 | Q, NR |
| 15 | 7 | 6 | Čaba Silađi | Serbia | 1:00.14 | Q |
| 16 | 5 | 3 | Ross Murdoch | Great Britain | 1:00.19 | |
| 17 | 6 | 7 | Darragh Greene | Ireland | 1:00.20 | Q |
| 18 | 7 | 1 | Danil Semyaninov | Russia | 1:00.22 | |
| 19 | 7 | 9 | Erik Persson | Sweden | 1:00.23 | Q |
| 20 | 6 | 1 | Giedrius Titenis | Lithuania | 1:00.32 | |
| 21 | 4 | 6 | André Klippenberg Grindheim | Norway | 1:00.38 | |
| 21 | 4 | 4 | Jan Kozakiewicz | Poland | 1:00.38 | |
| 23 | 3 | 4 | Tomáš Klobučník | Slovakia | 1:00.43 | NR |
| 24 | 7 | 2 | Caspar Corbeau | Netherlands | 1:00.52 | |
| 25 | 7 | 8 | Aleksandr Zhigalov | Russia | 1:00.64 | |
| 26 | 5 | 8 | Lyubomir Epitropov | Bulgaria | 1:00.70 | |
| 27 | 5 | 1 | Melvin Imoudu | Germany | 1:00.84 | |
| 28 | 5 | 9 | Andrea Castello | Italy | 1:00.85 | |
| 29 | 7 | 0 | Christopher Rothbauer | Austria | 1:00.91 | |
| 30 | 4 | 5 | Max Pilger | Germany | 1:01.06 | |
| 31 | 3 | 2 | Jérémy Desplanches | Switzerland | 1:01.08 | |
| 32 | 6 | 8 | Valentin Bayer | Austria | 1:01.22 | |
| 33 | 4 | 3 | Demirkan Demir | Turkey | 1:01.34 | |
| 34 | 5 | 7 | Theo Bussiere | France | 1:01.40 | |
| 35 | 3 | 6 | Miikka Ruohoniemi | Finland | 1:01.41 | |
| 36 | 4 | 2 | Antoine Viquerat | France | 1:01.43 | |
| 37 | 4 | 9 | Johannes Skagius | Sweden | 1:01.45 | |
| 38 | 4 | 7 | Tamás Takács | Hungary | 1:01.50 | |
| 39 | 3 | 5 | Konstantinos Meretsolias | Greece | 1:01.56 | |
| 40 | 3 | 7 | Gonzalo Carazo | Spain | 1:01.61 | |
| 41 | 2 | 6 | Matěj Zábojník | Czech Republic | 1:01.84 | |
| 42 | 2 | 4 | Filip Chrápavý | Czech Republic | 1:01.87 | |
| 42 | 4 | 0 | Francisco Quintas | Portugal | 1:01.87 | |
| 44 | 3 | 3 | Jan Kalusowski | Poland | 1:01.90 | |
| 45 | 3 | 0 | Jolann Bovey | Switzerland | 1:01.91 | |
| 46 | 4 | 1 | Yannick Käser | Switzerland | 1:01.96 | |
| 46 | 6 | 0 | Volodymyr Lisovets | Ukraine | 1:01.96 | |
| 48 | 2 | 7 | Christoffer Tofte Haarsaker | Norway | 1:01.99 | |
| 48 | 2 | 2 | Aleksas Savickas | Lithuania | 1:01.99 | |
| 50 | 6 | 9 | Martin Allikvee | Estonia | 1:02.11 | |
| 51 | 2 | 8 | Ari-Pekka Liukkonen | Finland | 1:02.14 | |
| 52 | 3 | 8 | Rostyslav Kryzhanivskyy | Ukraine | 1:02.32 | |
| 53 | 2 | 1 | Savvas Thomoglou | Greece | 1:02.43 | |
| 54 | 2 | 0 | Arkadios Aspougalis | Greece | 1:02.44 | |
| 55 | 1 | 5 | Joonas Niine | Estonia | 1:02.50 | |
| 56 | 1 | 4 | Jaime Morote | Spain | 1:02.74 | |
| 57 | 3 | 1 | Joan Ballester | Spain | 1:02.76 | |
| 57 | 1 | 3 | Daniils Bobrovs | Latvia | 1:02.76 | |
| 59 | 3 | 9 | Dávid Horváth | Hungary | 1:02.77 | |
| 60 | 2 | 5 | Ron Polonsky | Israel | 1:02.87 | |
| 61 | 2 | 9 | Luka Mladenovic | Austria | 1:03.10 | |
| 62 | 1 | 6 | Dominik Márk Török | Hungary | 1:03.19 | |
| 63 | 4 | 8 | Kristian Pitshugin | Israel | 1:03.20 | |
| 64 | 2 | 3 | Máté Kutasi | Hungary | 1:03.28 | |
| 65 | 1 | 2 | Giacomo Casadei | San Marino | 1:04.11 | |
| 66 | 1 | 7 | Even Qarri | Albania | 1:11.21 | |

### Semifinals

The semifinals were held on 17 May at 18:53.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Arno Kamminga | Netherlands | 58.74 | Q |
| 2 | 2 | Berkay Ömer Öğretir | Turkey | 59.23 | Q |
| 2 | 4 | Ilya Shymanovich | Belarus | 59.23 | Q |
| 4 | 6 | Andrius Šidlauskas | Lithuania | 59.30 | q |
| 5 | 3 | Kirill Prigoda | Russia | 59.36 | |
| 6 | 1 | Čaba Silađi | Serbia | 59.72 | |
| 7 | 7 | Tobias Bjerg | Denmark | 1:00.12 | |
| 8 | 8 | Erik Persson | Sweden | 1:00.50 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Adam Peaty | Great Britain | 57.67 | Q |
| 2 | 5 | Nicolò Martinenghi | Italy | 58.45 | Q |
| 3 | 2 | James Wilby | Great Britain | 58.80 | q |
| 4 | 6 | Alessandro Pinzuti | Italy | 59.20 | q |
| 5 | 3 | Anton Chupkov | Russia | 59.49 | |
| 6 | 7 | Lucas Matzerath | Germany | 59.65 | |
| 7 | 1 | Matti Mattsson | Finland | 59.99 | NR |
| 8 | 8 | Darragh Greene | Ireland | 1:00.26 | |

### Final

The final was held on 18 May at 18:12.
| Rank | Lane | Name | Nationality | Time |
| | 4 | Adam Peaty | Great Britain | 57.66 |
| | 3 | Arno Kamminga | Netherlands | 58.10 |
| | 6 | James Wilby | Great Britain | 58.58 |
| 4 | 7 | Ilya Shymanovich | Belarus | 58.75 |
| 5 | 5 | Nicolò Martinenghi | Italy | 58.94 |
| 6 | 8 | Andrius Šidlauskas | Lithuania | 59.31 |
| 7 | 2 | Alessandro Pinzuti | Italy | 59.50 |
| 8 | 1 | Berkay Ömer Öğretir | Turkey | 59.52 |