2003–04 LEN Euroleague

The 2003–04 LEN Euroleague is the ongoing 41st edition of LEN's premier competition for men's water polo clubs. It is scheduled to run from 17 September 2003 to 29 May 2004, and it is contested by 38 teams. The Final Four (semifinals, final, and third place game) will take place on May 28 and May 29 in Budapest.

2003–04 LEN Euroleague

The 2003–04 LEN Euroleague is the ongoing 41st edition of LEN's premier competition for men's water polo clubs. It is scheduled to run from 17 September 2003 to 29 May 2004, and it is contested by 38 teams. The Final Four (semifinals, final, and third place game) will take place on May 28 and May 29 in Budapest.