The 2005 ACB Playoffs was the postseason of the 2004–05 ACB season. Consisting of 8 teams best classified, the playoffs involved over a two weeks of play and more than 20 games overall. The playoffs were conducted in 3-game series, with the team with the better record holding home court advantage. Real Madrid won the 2005 ACB Playoffs by defeating the defending champions, TAU Cerámica, 3-2 in the ACB Finals.
The Finals were broadcast in Spain on RTVE. For a list of international broadcasters see the acb international TV site Archived 2005-09-24 at the Wayback Machine.