The LEN Euro Cup is the second-tier European water polo club competition run by the Ligue Européenne de Natation for those clubs who did not qualify for the LEN Champions League. The cup was inaugurated in 1992.
The LEN Women's Champions League, formerly known as LEN European Cup, LEN Champions Cup and LEN Euroleague Women, is the premier competition for women's water polo clubs of Europe and takes place every year. It is organized by the Ligue Européenne de Natation (LEN) and was created in 1987 as LEN European Cup.
The 2017 Women's LEN Super Cup was the 12th edition of the annual trophy organised by LEN and contested by the reigning champions of the two European competitions for women's water polo clubs. The contending teams were Russia's Kinef Kirishi and Hungary's UVSE. The match was played just before the Men's Super Cup at the Császár-Komjádi Béla Uszoda, in Budapest, on 4 November 2017.
The 2019 Women's LEN Super Cup was the 14th edition of the annual trophy organised by LEN and contested by the reigning champions of the two European competitions for women's water polo clubs. The match was played between CN Sabadell and Orizzonte Catania at the Centre Can Llong in Sabadell, Spain, on 26 November 2019.
The 2017–18 LEN Euro League Women was the 31st edition of the top tier European tournament for women's water polo clubs. It ran from 1 December 2017 to 21 April 2018.
The 2020–21 LEN Champions League was the 58th edition of LEN's premier competition for men's water polo clubs.
The 2021–22 LEN Champions League was the 59th edition of LEN's premier competition for men's water polo clubs.
The 2022–23 Women's LEN Euro Cup is the 24th edition of the European second-tier tournament for women's water polo clubs. Sixteen teams participated in the competition. Ethnikos Piraeus is the defending champion.
The 2022–23 LEN Challenger Cup was the inaugural edition of a water polo competition organised by the Ligue Européenne de Natation (LEN). It acts as the third tier, below the LEN Champions League and the LEN Euro Cup. GS Apollon Smyrnis of Greece became the first champions, defeating CN Terrassa of Spain in the final.
The 2022 LEN Super Cup was the 40th edition of the annual trophy organised by LEN and contested by the reigning champions of the two European competitions for men's water polo clubs. The match was played between European champions Pro Recco and CN Sabadell. The match was held in Sabadell, Spain, on 19 November 2022.
The LEN Women's Challenger Cup is a water polo club competition organised by the Ligue Européenne de Natation (LEN). It acts as the third tier, below the LEN Women's Champions League and the LEN Women's Euro Cup. Its first season will commence in 2023–24.
The 2021 LEN Super Cup was the 39th edition of the annual trophy organised by LEN and contested by the reigning champions of the two European competitions for men's water polo clubs. The match was played between European champions Pro Recco of Italy and Szolnok of Hungary. The match was held in Szolnok, Hungary, on 20 December 2021.
The 2023 LEN Super Cup was the 41st edition of the annual trophy organised by LEN and contested by the reigning champions of the two European competitions for men's water polo clubs. The match was played between European champions Pro Recco and A-Híd VasasPlaket. The match was held on 10 November. Pro Recco won their third consecutive title, becoming the first club to achieve that feat, after they beat A-Híd VasasPlaket 18–10.
The 2023–24 LEN Women's Challenger Cup was the inaugural edition of the new water polo competition organised by the Ligue Européenne de Natation (LEN). It acted as the third tier, below the LEN Women's Champions League and the LEN Women's Euro Cup.
The 2023–24 LEN Women's Euro Cup is the 25th edition of the water polo competition organised by the Ligue Européenne de Natation (LEN). This is the first season under the new changes made by LEN. UVSE Budapest are the reigning champions, but won't defend their title due to their involvement in this season's Champions League.
The 2023–24 LEN Women's Champions League is the 36th edition of the water polo competition organised by the Ligue Européenne de Natation (LEN). This is the first season under the new changes made by LEN. The defending champions are Astralpool Sabadell.
The 2023–24 LEN Euro Cup is the 32nd edition of the water polo competition organised by the Ligue Européenne de Natation (LEN). This is the first season under the new changes made by LEN.
The 2023–24 LEN Challenger Cup was the 2nd edition of a water polo competition organised by the Ligue Européenne de Natation (LEN). It acts as the third tier, below the LEN Champions League and the LEN Euro Cup. The reigning champions are GS Apollon Smyrnis, but they won't defend their title due to their involvement in this season's Champions League and Euro Cup.
The 2023–24 LEN Champions League is the 61st edition of LEN's premier competition for men's water polo clubs. Because of the congested schedule, there's a new format this year. Pro Recco are the three time defending champions.
The 2024–25 LEN Women's Champions League is the 37th edition of the water polo competition organised by European Aquatics. The defending champions are Astralpool Sabadell.
2024–25 LEN Challenger Cup 
Galatasaray (1st title)
GS Apollon Smyrnis 