The 2010–11 LEN Euroleague was the highest-level competition in men's European club water polo. It involved the champions and other top teams from European national leagues and ran from September 2010 to May 2011. The Final Four (semifinals, final, and third place game) took place on 3–4 June at Foro Italico, Rome.

Allocation by federation

Water polo federations are allocated places in accordance with their performances in the preliminary round (group stage) of the 2009–10 LEN Euroleague: Federations do not have to enter their top two teams into the Euroleague. If they do not think their clubs can be competitive, they can enter teams into the second-tier LEN Cup.

Format and Distribution

The LEN Euroleague 2010/11 has a slightly different format to previous years with the addition of a second group stage to replace the two-legged quarterfinals. There are five phases to this competition:

Teams

League positions of the previous season shown in parentheses. th Title Holder

Tournament phase

First qualifying round

Group A (Košice)

Group B (Istanbul)

Group C (Szeged)

Group D (Budva)

Second qualifying round

Group E (Barcelona)

Group F (Novi Sad)

Group G (Berlin)

Group G (Rijeka)

Group stage

Group A

Group B

Group C

Group D

Quarterfinal Round (Second Group Stage)

Group A

Group B

Final Four (Rome)

Stadio Olimpico del Nuoto, Rome, Italy Semi-finals Third place Final

Final standings

Awards