1969–70 FIBA European Champions Cup

Competition system

• 24 teams (European national domestic league champions, plus the then current title holders), playing in a tournament system, played knock-out rounds on a home and away basis. The aggregate score of both games decided the winner.
• The eight teams qualified for 1/4 Finals were divided into two groups of four. Every team played against the other three in its group in consecutive home-and-away matches, so that every two of these games counted as a single win or defeat (point difference being a decisive factor there). In case of a tie between two or more teams after the group stage, the following criteria were used to decide the final standing: 1) one-to-one games between the teams; 2) basket average; 3) individual wins and defeats.
• The group winners and runners-up of the 1/4 Final round qualified for 1/2 Finals. The final was played at a predetermined venue.

First round

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*****Union Radès Transport withdrew before the first leg and ASVEL received a forfeit (2–0) in both games.

Second round

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;Automatically qualified to the group stage:

• URS CSKA Moscow (title holder)

Quarterfinals group stage

The quarterfinals were played with a round-robin system, in which every Two Game series (TGS) constituted as one game for the record.

Group B

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Semifinals

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Final

April 9, Sportska Dvorana Skenderija, Sarajevo |}

Awards

[[EuroLeague Finals Top Scorer|FIBA European Champions Cup Finals Top Scorer]]

• URS Sergei Belov (URS CSKA Moscow)