| Venue: | Orbita Indoor Swimming Pool, Wrocław, Poland |
| Dates: | 21 July 2017 |
| Competitors: | 8 |
| Nations: | 6 |
| Gold: |  Dénes Kanyó |
| Silver: | Max Lauschus |
| Bronze: |  Davide De Ceglie |
| Prev: | 2013 |
The men's surface 400 m event in finswimming at the 2017 World Games took place on 21 July 2017 at the Orbita Indoor Swimming Pool in Wrocław, Poland.[1]
A total of 8 athletes entered the competition. Only final was held.
| Rank | Athlete | Nation | Time | |
|---|---|---|---|---|
| Dénes Kanyó | Hungary | 2:58.41 | ||
| Max Lauschus | 2:59.02 | |||
| Davide De Ceglie | 3:01.46 | |||
| 4 | Jang Seok-hyeok |  South Korea | 3:02.06 | |
| 5 | Iakov Stryukov |  Russia | 3:04.35 | |
| 6 | Evgeny Smirnov | Russia | 3:04.46 | |
| 7 | Stefano Figini | Italy | 3:05.38 | |
| 8 | Christos Christoforidis | Greece | 3:05.42 |