| Date | R | Home vs Away | - |
|---|---|---|---|
| 08/08 07:30 | 1 |
Greece vs Serbia
|
10-13 |
| 08/08 04:40 | 20 |
Hungary vs Spain
|
9-5 |
| 08/08 02:00 | 31 |
Croatia vs USA
|
14-11 |
| 08/08 00:30 | 32 |
Montenegro vs Italy
|
17-18 |
| 08/06 10:50 | 2 |
Serbia vs Spain
|
10-9 |
| 08/06 09:20 | 2 |
Italy vs USA
|
6-7 |
| 08/06 06:30 | 2 |
Greece vs Hungary
|
9-6 |
| 08/06 05:00 | 2 |
Montenegro vs Croatia
|
10-12 |
| 08/04 10:50 | 3 |
Hungary vs Croatia
|
15-11 |
| 08/04 09:20 | 3 |
Italy vs Serbia
|
6-10 |
| 08/04 06:30 | 3 |
Greece vs Montenegro
|
10-4 |
| 08/04 05:00 | 3 |
USA vs Spain
|
8-12 |
The men's tournament of water polo at the 2020 Summer Olympics at Tokyo, Japan began on 25 July and ended on 8 August 2021. It was held at the Tokyo Tatsumi International Swimming Center. It was the 27th official appearance of the tournament, which was not held in 1896 and was a demonstration sport in 1904 but otherwise had been held at every Olympics.
On 24 March 2020, the Olympics were postponed to 2021 due to the COVID-19 pandemic. Because of this pandemic, the games are played behind closed doors.
Serbia won their second consecutive gold medal after a finals win over Greece, while Hungary captured the bronze medal.
The medals for the competition were presented by Nenad Lalović, IOC Executive Board Member; Serbia and the medalists' bouquets were presented by Andrey Kryukov, Kazakhstan; FINA Bureau Member.