The men's 100m butterfly events at the 2020 World Para Swimming European Championships were held at the Penteada Olympic Pools Complex.
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 2 | Ihar Boki |  Belarus | 54.63 | Q |
| 2 | 1 | Oleksii Virchenko |  Ukraine | 57.06 | Q |
| 3 | 2 | Alex Portal |  France | 57.41 | Q |
| 4 | 1 | Kyrylo Garashchenko | Ukraine | 59.90 | Q |
| 5 | 2 | Roman Agalakov |  Kazakhstan | 1:00.79 | Q |
| 6 | 2 | Juan Ferron Gutierrez |  Spain | 1:00.84 | Q |
| 7 | 1 | Enrique José Alhambra Mollar | Spain | 1:02.25 | Q |
| 8 | 1 | Taliso Engel |  Germany | 1:02.74 | Q |
| 9 | 2 | Gerasimos Lignos |  Greece | 1:02.83 | |
| 10 | 1 | Kylian Portal | France | 1:07.13 | |
| 11 | 2 | Adrian Jastrzebski |  Poland | 1:10.47 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
 | Ihar Boki | Belarus | 53.72 | WR |
 | Oleksii Virchenko | Ukraine | 56.38 | |
 | Alex Portal | France | 57.00 | |
| 4 | Kyrylo Garashchenko | Ukraine | 58.23 | |
| 5 | Juan Ferron Gutierrez | Spain | 1:00.64 | |
| 6 | Enrique Juan Alhambra Mollar | Spain | 1:00.78 | |
| 7 | Taliso Engel | Germany | 1:02.04 | |
| 8 | Roman Agalakov | Kazakhstan | 1:03.12 |
Timothy Antalfy is an Australian Paralympic swimmer. He represented Australia at the 2012 Summer Paralympics in swimming and won a bronze medal.
Sean Russo is an Australian swimmer. He represented Australia at the 2012 London and 2016 Rio Paralympics.
Braedan Jason is an Australian Paralympic swimmer. He represented Australia at the 2016 Rio Paralympics and the 2020 Tokyo Paralympics.
Jacob Templeton is an Australian Paralympic swimmer. He represented Australia at the 2016 Rio Paralympics.
The men's 50m freestyle events at the 2020 World Para Swimming European Championships were held at the Penteada Olympic Pools Complex.
The women's 100m butterfly events at the 2020 World Para Swimming European Open Championships were held at the Penteada Olympic Pools Complex.
The men's 100m freestyle events at the 2020 World Para Swimming European Open Championships were held at the Penteada Olympic Pools Complex.
The women's 100m freestyle events at the 2020 World Para Swimming European Open Championships were held at the Penteada Olympic Pools Complex.
The men's 100m butterfly events at the 2022 World Para Swimming Championships were held at the Penteada Olympic Swimming Complex in Madeira between 12–18 June.
The women's 100m butterfly events at the 2022 World Para Swimming Championships were held at the Penteada Olympic Swimming Complex in Madeira between 12 and 18 June.
