| Tournament details | |
|---|---|
| Country | Spain |
| Dates | 31 May–15 June 2021 |
| Teams | 8 |
| Defending champions | TD Systems Baskonia |
| Final positions | |
| Champions | Barça 16th ACB title 19th Spanish title |
| Runner-up | Real Madrid |
| Semifinalists | |
| Tournament statistics | |
| Matches played | 18 |
The 2021 ACB Playoffs, also known as 2021 Liga Endesa Playoffs for sponsorship reasons, was the postseason tournament of the ACB's 2020–21 season, which began on 19 September 2020. The playoffs started on May 31 after the EuroLeague Final Four, which was played on May 28–30, and ended on June 15 before the Olympic Qualifying Tournaments, which will be played on June 29–July 4.
TD Systems Baskonia was the defending champion which got knocked out by Valencia Basket in the quarterfinals. Barça claimed their 16th ACB title and their 19th Spanish title, ending a 7-year drought, by downing archrivals Real Madrid in Game 2 of the Finals. Barça swept the series and completed its first Spanish double (League and Cup titles) since 2011.