Men's 100m Butterfly Final
samedi 31 juillet 2021, 01h30 GMT – 06h30 GMT
| Nom | Temps | |
|---|---|---|
| 1 |  Caeleb Dressel | 49.45″ |
| 2 |  Kristóf Milák | + 0.23″ |
| 3 |  Noè Ponti | + 1.29″ |
| 4 |  Andrei Minakov | + 1.43″ |
| 5 |  Matthew Temple | + 1.47″ |
| 5 |  Jakub Majerski | + 1.47″ |
| 7 | Luis Carlos Martinez | + 1.64″ |
| 8 | Josif Miladinov | + 2.04″ |