See main article: 2011–12 Euroleague. Results for the Quarterfinals of the 2011–12 Euroleague basketball tournament.
The quarterfinals will be played from March 22 to April 6, 2012. Team #1 (i.e., the group winner in each series) hosts Games 1 and 2, plus Game 5 if necessary. Team #2 hosts Game 3, plus Game 4 if necessary.
| width=250 | Team 1 | width=80 | Agg. | width=250 | Team 2 | width=80 | 1st leg | width=80 | 2nd leg | width=80 | 3rd leg | width=80 | 4th leg | width=80 | 5th leg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CSKA Moscow  | 3–1 |  Gescrap Bizkaia | 98–71 | 79–60 | 81–94 | 73–71 | |||||||||
Montepaschi Siena  | 1–3 | Olympiacos | 75–82 | 81–80 | 55–75 | 69–76 | |||||||||
| 3–2 |  Maccabi Tel Aviv | 93–73 | 92–94 | 62–65 | 78–69 | 86–85 | |||||||||
| FC Barcelona | 3–0 | UNICS | 78–66 | 66–63 | 67–56 |
All times are CET (UTC+1).