1958–59 FIBA European Champions Cup

It was won by Rīgas ASK for the second straight time, after they again beat Academic, in both EuroLeague Finals games (79–58 & 69–67).

Riga defeated Lech Poznań in the semifinals, and Honvéd in the quarterfinals.

European national domestic league champions, plus the then current FIBA European Champions Cup title holders only, playing in a tournament system.

*Etzella and Sundbyberg withdrew before the competition due to financial problems, so Lech Poznań and Honvéd received a forfeit (2–0) in both games *Simmenthal Milano withdrew after the 1st leg, team rejected playing on an outdoor court.

*The second leg was not played as Al-Gezira didn't travel to Bulgaria due to financial reasons, and therefore Academic received a forfeit (2-0).