Regional Water Polo League
| Sport | Water polo |
|---|---|
| Founded | 2008 |
| No. of teams | 8 |
| Country | Croatia Italy Montenegro Serbia Slovenia |
| Continent | European Aquatics (Europe) |
| Most recent champions | Radnički (2nd title) (2024–25) |
| Most titles | Jug (5 titles) |
| Broadcaster | Arena Sport |
| Level on pyramid | 1 |
| Domestic cup | No |
| Official website | rwp-league |
The Regional Water Polo League (abbr. RWP), commonly known as the Regional League or Adriatic League, is a temporarily suspended regional water polo league in Southeast Europe. Originally, the league featured clubs from Croatia, Montenegro, and Slovenia. In later years, clubs from Serbia joined the league and in one season club from Italy participated in the league. As of 2025–26 season, the league was suspended due to various reasons.