The 2003–04 LEN Trophy was the 12th edition of LEN's second-tier competition for men's water polo clubs.
Knockout stage
Eight Finals
Quarter-finals
Semi-finals
Final
2003–04 LEN TrophyChampions Barcelona2nd Cup
See also 2003–04 LEN Euroleague
References LEN-kupa 2003-2004 nemzetisport.hu