2023–24 LEN Challenger Cup
| 2023–24 LEN Challenger Cup | |
|---|---|
| League | LEN Challenger Cup |
| Sport | Water polo |
| Duration | 19 October 2023 – 27 April 2024 |
| Number of games | 50 |
| Number of teams | 19 |
| Finals champions | Galatasaray (1st title) |
| Runners-up | Triglav Kranj |
The 2023–24 LEN Challenger Cup was the 2nd edition of a water polo competition organised by the Ligue Européenne de Natation (LEN). It acts as the third tier, below the LEN Champions League and the LEN Euro Cup. The reigning champions are GS Apollon Smyrnis, but they won't defend their title due to their involvement in this season's Champions League and Euro Cup.
Galatasaray won the competition, beating Slovenian side, Triglav Kranj, in the final. They become the first men's water polo team from Turkey to win a European title.