The 1970–71 FIBA European Champions Cup was the 14th installment of the European top-tier level professional basketball club competition FIBA European Champions Cup (now called EuroLeague).

The Final was held at the Arena Deurne, in Antwerp, Belgium, on April 8, 1971.

It was won by CSKA Moscow, who defeated Ignis Varese, by a result of 67–53.

*FIBA cancelled this match and declared İTÜ winner as Partizani Tirana refused to play in Turkey due to an outbreak of cholera in this country.

**Fiat Stars and ÍR withdrew before the first leg, so AŠK Olimpija and Olympique Antibes received a forfeit (2–0) in both their games.