Following is a thorough and detailed list of all teams ever to have participated in the European competitions organized by FIBA and ULEB. The arrangement of these teams is not done on an alphabetical basis, since I prefer to group them by countries (although each one, this time, has a traditional A to Z order and, in some cases like Germany, Russia, Serbia-Montenegro, and the newborn Soviet and Balkan republics, I include all the political territories a team played for). From the corresponding link of each country you can access the list of its participating teams, which includes the following data for every club: 1) official team's name in its original language (or a transcription in Roman characters), together with changes of name during its history in Eurocups, including mergers with other clubs; 2) city/-ies where it plays regularly; 3) club websites; 4) participations in the late FIBA competitions: SuproLeague (C1), Saporta Cup (C2), Korać Cup (C3) and EuroCup Challenge (ECC); 5) participations in Euroleague (EL); 6) participations in ULEB Cup (ULEB), later renamed Eurocup (EUROCUP); 7) participations in the new FIBA Europe competition: Champions League (CL) and EuroCup (EC), later renamed EuroChallenge (EUROCHALLENGE) and Europe Cup (FIBA_EC).
Mergers and changes of name considered, up to 2021-22 season (included) as many as 857 teams have participated in FIBA and ULEB European competitions. In the transcription of names I've used standardized linguistic norms, which apply uniformly to all the teams of the same country, so it's possible you notice some differences in the case of some clubs' names. My ultimate goal is to offer a single, unified terminology which doesn't depend on the spelling of a particular target language.
• The names of teams are written in their original spelling (or a standard transcription into Latin characters, in the case of other alphabets). This is the reason why some clubs may slightly differ in form with respect to other unstandardized information sources.