Current season, competition or edition: 2024–25 LEN Champions League | |
| Formerly | European Cup Euroleague |
|---|---|
| Sport | Water polo |
| Founded | 1963 |
| President | Paolo Barelli |
| No. of teams | 24 (preliminary stage) 16 (group stage) |
| Country | LEN members |
| Continent | Europe |
| Most recent champion(s) |  Ferencváros (2nd title) |
| Most titles |  Pro Recco (11 titles) |
| Level on pyramid | 1st Tier (Europe) |
| Official website | championsleague.len.eu |
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 eleven titles. The current European champion is Ferencváros, who won their second title after defeating Pro Recco in the 2023–24 LEN Champions League Final in Valletta.