| 2018 FINA Men's Water Polo World Cup | |
| League: | FINA Water Polo World Cup |
| Sport: | Water polo |
| Duration: | 11 – 18 September |
| Playoffs: | Super Final |
| Seasonslist: | FINA Water Polo World Cup |
| Seasonslistnames: | FINA Water Polo World Cup |
| Prevseason Link: | 2014 FINA Men's Water Polo World Cup |
| Prevseason Year: | 2014 |
| Nextseason Link: | 2023 FINA Men's Water Polo World Cup |
| Nextseason Year: | 2023 |
The 16th edition of the Men's FINA Water Polo World Cup were held in Berlin, Germany from September 11 to September 16, 2018.[1] Like the final tournament of the 2007 FINA Men's Water Polo World League all matches were contested in the Europasportpark swimming pool.
8 teams qualified for the 2018 FINA World Cup.[2] They were split into two groups of 4 teams. After playing a Round-robin every team advanced to the quarterfinals. The best ranked team of Group A played against the fourth ranked team of Group B, the second ranked team of Group A against the third ranked team of Group B the third ranked team of Group A against the second ranked team of Group B and the fourth ranked team of Group A against the best ranked team of Group B. The winners of those quarterfinals advanced to the Semis and played out the champion while the losers of the quarterfinals competed in placement matches.[3]
The top eight teams from the previous world championship are no longer qualified. Now only the top three teams from the previous world championship qualify, with one guest per continent (the highest-ranked team from the previous world championship).
| width=20% | Teams ! | width=50% | Qualified as |
|---|---|---|---|
(European Host) | Host 1st 2017 World Championship 2nd 2017 World Championship 3rd 2017 World Championship 1st European team at 2017 World Championship 1st American team at 2017 World Championship 1st Oceanian team at 2017 World Championship 1st Asian team at 2017 World Championship 1st African team at 2017 World Championship |
| width=25% | Group A ! | width=25% | Group B |
|---|---|---|---|
(H) |
All times are local (UTC+2).
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| Rank | width=170 | Team |
|---|---|---|
| [4] | ||
| 4 | ||
| 5 | ||
| 6 | ||
| 7 | ||
| 8 |
| 1 |  Gavril Subotić | 17 | 27 | 63.0% |
| 2 | Andrija Bašić | 16 | 19 | 84.2% |
| 3 | Dušan Mandić | 15 | 32 | 46.9% |
 Keigo Okawa | 44 | 34.1% | ||
| 5 | Julian Real | 14 | 28 | 50.0% |
 Bence Bátori | 29 | 48.3% | ||
| Gergő Zalánki | 37 | 37.8% | ||
| 8 |  Joe Kayes | 13 | 25 | 52.0% |
| Seiya Adachi | 34 | 38.2% | ||
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