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 2025âÂÂ26 season, the league was suspended due to various reasons.
The league was established in 2008 as the "Adriatic Water Polo League" and the inaugural 2008âÂÂ09 season consisted of clubs from Croatia, Montenegro and Slovenia. Members of the inaugural season were Jug, Mladost, Primorje, POà  K, Jadran Split, Medveà ¡ÃÂak Zagreb, à  ibenik, Mornar, Jadran, Primorac, Budva, and Koper. The first league champions were VK Jug.
In the 2009âÂÂ10 season, Cattaro joined the league and the Final Four was introduced into the league. In the 2011âÂÂ12 season, the Italian water polo club Pro Recco request to join the Adriatic League was granted and immediately in their first season they became champions, but left the league after the season. The Serbian clubs (Partizan, Crvena zvezda, RadniÃÂki and Vojvodina) joined the league in the 2014âÂÂ15 season.
Starting from the 2015âÂÂ16 season, second-tier Regional League A2 was introduced.
In February 2019, three team members of Serbian club Crvena zvezda were attacked in Split by Croatian ultra-nationalists, before regional league game against Mornar. The incident was condemned by Croatian and Serbian public, and by many organizations and officials as well. Following the incident, the Water Polo Federation of Serbia and Serbian clubs in competition sought to not play any further games in Split, and competition's Board of Directors made a decision to postpone any further games in Split in which Serbian clubs are included.
Starting with the 2020âÂÂ21 season, the league is played in different format due to the COVID-19 pandemic, having two groups (2020âÂÂ21 season with host cities being Belgrade and Dubrovnik, and 2021âÂÂ22 season with host cities Belgrade and Split) and final tournament (2020âÂÂ21 host being Zagreb, and 2021âÂÂ22 host being Belgrade); In 2020âÂÂ21 season, the Serbian club RadniÃÂki eventually won their first championship, thus ending 8-year dominance of the Croatian clubs. In 2021âÂÂ22 season, the newcomer to the competition, Novi Beograd, lifted its maiden trophy.
In August 2025, it was decided that the 2025âÂÂ26 season would not be played, due to various reasons.
Clubs that participated in the 2024âÂÂ25 season:
The following is a list of clubs who have played in the Regional Water Polo League at any time since its formation in 2008 to the current season. A total of 22 clubs from five countries have played in the top-tier of the Regional League.
<div id="n"></div><sup>note</sup> The league was played in a round-robin tournament format.