See main article: Swimming at the 2018 Mediterranean Games.
| Event: | Men's 100 metre butterfly |
| Games: | 2018 Mediterranean Games |
| Dates: | 23 June |
| Venue: | Campclar Aquatic Center |
| Location: | Tarragona, Spain |
| Competitors: | 14 |
| Nations: | 9 |
| Win Value: | 52.25 |
| Gold: | Piero Codia |
| Gold Nation: | ITA |
| Silver: | Matteo Rivolta |
| Silver Nation: | ITA |
| Bronze: | Ümit Can Güreş |
| Bronze Nation: | TUR |
| Prev: | 2013 |
| Next: | 2022 |
The men's 100 metre butterfly competition at the 2018 Mediterranean Games was held on 23 June 2018 at the Campclar Aquatic Center.[1]
Prior to this competition, the existing world and Mediterranean Games records were as follows:
| World record | 49.82 | Rome, Italy | 1 August 2009 | ||
| Mediterranean Games record | 51.79 | Pescara, Italy | 28 June 2009 |
The heats were held at 10:03.
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 5 | Ümit Can Güreş | 52.85 | Q | ||
| 2 | 2 | 4 | Piero Codia | 53.08 | Q | ||
| 3 | 2 | 3 | Stefanos Dimitriadis | 53.67 | Q | ||
| 4 | 1 | 6 | Alberto Lozano | 53.70 | Q | ||
| 5 | 1 | 4 | Matteo Rivolta | 53.78 | Q | ||
| 6 | 2 | 5 | Ivan Lenđer | 53.94 | Q | ||
| 7 | 2 | 6 | Jordan Coelho | 54.16 | Q | ||
| 8 | 2 | 2 | Berk Özkul | 54.19 | Q | ||
| 9 | 1 | 2 | Luis García | 54.21 | |||
| 10 | 1 | 7 | Ahmed Hussein | 54.83 | |||
| 11 | 1 | 3 | Fotios Koliopoulos | 55.07 | |||
| 12 | 2 | 7 | Gal Kordež | 55.88 | |||
| 13 | 2 | 1 | Mohamed Abdelbaky | 56.70 | |||
| 14 | 1 | 1 | Dion Kadriu |
The final was held at 18:06.[2]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 5 | Piero Codia | 52.25 | ||||
| 2 | Matteo Rivolta | 52.34 | ||||
| 4 | Ümit Can Güreş | 52.53 | ||||
| 4 | 3 | Stefanos Dimitriadis | 53.18 | |||
| 5 | 1 | Jordan Coelho | 53.71 | |||
| 6 | 6 | Alberto Lozano | 53.75 | |||
| 7 | 7 | Ivan Lenđer | 53.83 | |||
| 8 | 8 | Berk Özkul | 54.08 |