| 1965–66 FIBA European Champions Cup | |
| League: | FIBA European Champions Cup |
| Sport: | Basketball |
| Finals: | Final Four |
| Finals Link: | 1966 FIBA European Champions Cup Final Four |
| Finals Champ: |  Simmenthal Milano |
| Finals Runner-Up: | Slavia VŠ Praha |
| Seasonslistnames: | FIBA European Champions Cup |
| Prevseason Link: | 1964–65 FIBA European Champions Cup |
| Prevseason Year: | 1964–65 |
| Nextseason Year: | 1966–67 |
| Nextseason Link: | 1966–67 FIBA European Champions Cup |
The 1965–66 FIBA European Champions Cup was the ninth season of the European top-tier level professional basketball club competition FIBA European Champions Cup (now called EuroLeague). It was won by Simmenthal Milano, for the first time in its history, the first of the club's three EuroLeague championships.
Simmenthal defeated Slavia VŠ Praha, by a score of 77–72, in the final of the first ever Champions Cup Final Four held in the EuroLeague competition, with two venues used: a venue in Milan, and the Palazzo dello sport arena in Bologna, Italy.[1] The Italian team, featuring future the Basketball Hall of Fame member Bill Bradley, defeated the favorites and former champs, CSKA Moscow, in the semifinal, by a score of 57–68.
26 teams. European national domestic league champions, plus the then current FIBA European Champions Cup title holders only, playing in a tournament system. The competition culminated in a Final Four.
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For the first time in the competition history, the quarterfinals were played with a round-robin system, in which every Two Game series (TGS) constituted as one game for the record. A third decisive game was played if the aggregate score of the first two games was tied.
| Top two places in each group advance to Semifinals |
Group AGames |
| width=15 | ! | width=220 | Team ! | width=20 | Pld ! | width=20 | Pts ! | width=20 | W ! | width=20 | L ! | width=20 | PF ! | width=20 | PA ! | width=20 | PD |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Slavia VŠ Praha | 3 | 5 | 2 | 1 | 490 | 486 | +4 | |||||||||
| 2. | Simmenthal Milano | 3 | 5 | 2 | 1 | 503 | 476 | +27 | |||||||||
| 3. |  Racing Mechelen | 3 | 4 | 1 | 2 | 553 | 570 | -17 | |||||||||
| 4. |  Real Madrid | 3 | 4 | 1 | 2 | 494 | 508 | -14 |
|}
| width=15 | ! | width=220 | Team ! | width=20 | Pld ! | width=20 | Pts ! | width=20 | W ! | width=20 | L ! | width=20 | PF ! | width=20 | PA ! | width=20 | PD |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | CSKA Moscow | 3 | 5 | 2 | 1 | 453 | 397 | +56 | |||||||||
| 2. | AEK | 3 | 5 | 2 | 1 | 413 | 426 | -13 | |||||||||
| 3. | CSKA Cherveno zname | 3 | 5 | 2 | 1 | 498 | 494 | +4 | |||||||||
| 4. | Zadar | 3 | 3 | 0 | 3 | 483 | 530 | -47 |
See main article: 1966 FIBA European Champions Cup Final Four.
March 31, Milan|}
March 30, Palazzo dello sport, Bologna|}
April 1, Milan|}
April 1, Palazzo dello sport, Bologna|}
| width=25 | width=220 | Team | |
|---|---|---|---|
| Simmenthal Milano | |||
| Slavia VŠ Praha | |||
| CSKA Moscow | |||
| AEK |