2010–11 LEN Euroleague
| 2010-11 LEN Euroleague | |
|---|---|
| League | LEN Euroleague |
| Sport | Water Polo |
| Duration | 23 September 2010 to 4 June 2011 |
| Number of teams | 16 (Preliminary Round) 34 (Total) |
| Final Four | |
| Finals champions |
 Partizan (7th title) |
| Runners-up |  Pro Recco |
The LEN Euroleague 2010/11 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.
Water polo federations are allocated places in accordance with their performances in the Preliminary Round (Group Stage) of the LEN Euroleague 2009-10:
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.
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:
League positions of the previous season shown in parentheses.
th Title Holder
Stadio Olimpico del Nuoto, Rome, Italy
Semi-finals
Third place
Final
...
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