2001–02 LEN Champions League
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| 2001-02 LEN Champions League | |
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| League | LEN Champions League |
| Sport | Water Polo |
| Duration | 24 October 2001 to 25 May 2002 |
| Number of teams | 8 (Preliminary Round) 28 (Total) |
| Final Four | |
| Finals champions |  Olympiacos (1st title) |
| Runners-up |  Honvéd |
The 2001–02 LEN Champions League is the ongoing 39th edition of LEN's premier competition for men's water polo clubs. It is scheduled to run from 24 October 2001 to 25 May 2002, and it is contested by 28 teams. The Final Four (semifinals, final, and third place game) took place on May 24 and May 25 in Budapest.
Preliminary Round
Location of teams of the 2001–02 LEN Champions League group stage.
Blue Group; 
Red Group.
Blue Group; 
Red Group.| Key to colours in group tables |
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| Group winners and runners-up advanced to Final four |
Blue Group
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Red Group
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Final Four (Budapest)
Hajós Alfréd Nemzeti Sportuszoda, Budapest, Hungary
Final standings
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