The 1993–94 LEN European Cup was the 31st edition of LEN's premier competition for men's water polo clubs.
| 1993–94 European Cup | |
|---|---|
| League | European Cup |
| Sport | Water Polo |
| Duration | to |
| Number of teams | 8 (quarter-finals) |
| Finals champions |  Újpest (1st title) |
| Runners-up |  Catalunya |
Quarter-finals edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
Olympic Nice 
|
15–17 |  Jadran Split
|
7–8 | 8–9 |
| Catalunya
|
19–15 |  Olympiacos
|
11–8 | 7–8 |
| HAVK Mladost
|
18–20 | Újpest
|
12–14 | 6–6 |
Posillipo 
|
20–8 |  CSKA Moscow
|
13–4 | 7–4 |
Semi-finals edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Jadran Split
|
11–14 | Catalunya
|
6–6 | 5–8 |
| Posillipo
|
20–24 | Újpest
|
11–11 | 9–13 |
Finals edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Újpest
|
21–17 | Catalunya
|
10–6 | 11–11 |
| 1993–94 European Cup champions |
|---|
| Újpest 1st title |