EuroChallenge (called the FIBA Europe League in 2003–05, and EuroCup in 2005–08) was the 3rd tier level transnational men's professional club basketball competition in Europe. It was organized and run by FIBA Europe. It is not to be confused with the EuroCup Challenge – the now defunct 4th tier level transnational men's professional club basketball competition in Europe, which was also organized and run by FIBA Europe, and played during the 2002–03 to 2006–07 seasons.