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.
Mercédesz Stieber is a water polo player from Hungary, who competed for her native country at the 2004 Summer Olympics in Athens, Greece and Beijing 2008. She won the 1994 and 2005 World Championships and the 1991 and 2001 European Championships.
The 2010-11 Women's LEN Trophy was the 12th edition of the second tier of LEN's international competitions for women's water polo clubs. Twenty teams from eleven countries took part in the competition, which ran from 10 December 2010 to 20 April 2011.
The Greek Women's Water Polo A1 League is the premier championship for women's water polo teams in Greece. It was founded in 1988, and it is currently contested by twelve teams. Greek League is ranked as one of the top national domestic leagues in European water polo. The champion, the runner-up and the third-placed team qualify for the LEN Euro League.
Olympiacos Women's Water Polo Club is the women's water polo department of the major Greek multi-sport club Olympiacos, based in Piraeus. The department was founded in 1988 and they play their games at the 1000-seated Papastrateio "Petros Kapagerof" Pool in Piraeus.
The LEN Women's Super Cup is an annual water polo match organized by the LEN and contested by the reigning champions of the two European club competitions, the Euro League and the LEN Trophy.
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 2018 Women's LEN Super Cup was the 13th 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 Kinef Kirishi and Dunaújvárosi FVE at the Neftyanik Sports Complex in Kirishi, Russia, on 10 November 2018.
The 2018–19 LEN Euro League Women was the 32nd edition of the major European tournament for women's water polo clubs. It ran from 24 January to 20 April 2019.
The 2019–20 LEN Euro League Women was the 33rd edition of the major competition for European women's water polo clubs. It is started on 31 October 2019 and it was scheduled to end with the Final 4 on 24 and 25 April 2020.
The 2018–19 Women's LEN Trophy was the 20th edition of the European second-tier tournament for women's water polo clubs. It was contested in Kirishi, Russia, on 12 and 13 April 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 2017–18 Women's LEN Trophy was the 19th edition of the European second-tier tournament for women's water polo clubs. It was contested in Mataró, Spain, on 13 and 14 April 2018.
The 2021–22 LEN Euro League Women is the 34th edition of the major competition for European women's water polo clubs. It started on 18 November 2021.
The 2021–22 Women's LEN Trophy is the 23rd edition of the European second-tier tournament for women's water polo clubs. It was a two-legged final that was played in Dunaújváros, Hungary, and Piraeus, Greece on 25 and 30 March 2022. Ethnikos won its second LEN Trophy to become the Greek team with the most titles regarding this competition.
The 2022–23 LEN Women's Champions League is the 35th edition of the major competition for European women's water polo clubs. It starts on 17 November 2022.
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 2023 LEN Women's Super Cup was the 17th 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 between European champions Astralpool Sabadell of Spain and UVSE Budapest of Hungary. The match was held on 7 November 2023. Astralpool Sabadell won a record fourth title, winning the final 14–11.
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 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.
2023–24 LEN Women's Euro Cup 
Plebiscito Padova 
Shturm 2002 
Ethnikos Piraeus 
UVSE 
