The LEN Champions League is the top-tier European professional water polo club competition with teams from up to 18 countries. It is organized by the Ligue Européenne de Natation. The competition started in 1963 as European Cup. A change of name and format occurred in 1996, with the competition being renamed Champions League and the final four system being established as the format of choice, for the first time during the 1996–97 LEN Champions League. From 2003 to 2011 the competition was named LEN Euroleague (with the change of name being simply a re-branding) and from 2011 and on LEN Champions League, its current name. LEN Champions League is the most popular water polo league in the European continent. It has been won by 24 clubs, 10 of which have won the title more than once. The most successful club in the competition is Pro Recco, with nine titles. The current European champion is Pro Recco, who won their ninth title after defeating FTC Telekom Budapest in the 2020–21 LEN Champions League Final in Belgrade. History Names of the competition 1963–1996: European Cup 1996–2003: Champions League 2003–2011: LEN Euroleague 2011–present: LEN Champions League Title holders 1963–64 Partizan 1964–65 Pro Recco 1965–66 Partizan 1966–67 Partizan 1967–68 Mladost 1968–69 Mladost 1969–70 Mladost 1970–71 Partizan 1971–72 Mladost 1972–73 OSC Budapest 1973–74 MGU Moscow 1974–75 Partizan 1975–76 Partizan 1976–77 CSK VMF Moscow 1977–78 Canottieri Napoli 1978–79 OSC Budapest 1979–80 Vasas 1980–81 Jug Dubrovnik 1981–82 Barcelona 1982–83 Spandau 04 1983–84 Stefanel Recco 1984–85 Vasas 1985–86 Spandau 04 1986–87 Spandau 04 1987–88 Sisley Pescara 1988–89 Spandau 04 1989–90 Mladost 1990–91 Mladost 1991–92 Jadran Split 1992–93 Jadran Split 1993–94 Újpest 1994–95 Catalunya 1995–96 Mladost 1996–97 Posillipo 1997–98 Posillipo 1998–99 POŠK 1999–00 Bečej 2000–01 Jug Dubrovnik 2001–02 Olympiacos 2002–03 Pro Recco 2003–04 Honvéd 2004–05 Posillipo 2005–06 Jug Dubrovnik 2006–07 Pro Recco 2007–08 Pro Recco 2008–09 Primorac Kotor 2009–10 Pro Recco 2010–11 Partizan 2011–12 Pro Recco 2012–13 Crvena zvezda 2013–14 Atlètic-Barceloneta 2014–15 Pro Recco 2015–16 Jug Dubrovnik 2016–17 Szolnok 2017–18 Olympiacos 2018–19 Ferencváros 2019–20 Cancelled due to the COVID-19 pandemic 2020–21 Pro Recco 2021–22 Pro Recco Finals Titles by club Titles by nation *Results until the breakup of Yugoslavia in 1991 and the self-determination of its rump state Serbia and Montenegro in 2006. Clubs from present day Serbia won the title 7 times and were runners-up additional 4 times, clubs from present day Croatia won the title 7 and