The 2019 ACB Playoffs, also known as 2019 Liga Endesa Playoffs for sponsorship reasons, was the postseason tournament of the ACB's 2018–19 season, which began on 27 September 2018. The playoffs started on 30 May 2019 and ended on 21 June 2019 with the Finals.

Real Madrid defended successfully the title and conquered its second consecutive league, 35th overall.

At the end of the regular season, the eight teams with the most wins qualify for the playoffs. The seedings are based on each team's record.

The bracket is fixed; there is no reseeding. The quarterfinals are best-of-three series; the team that wins two games advances to the next round. This round is in a 1–1–1 format. From the semifinals onward, the rounds are best-of-five series; the team that wins three games advances to the next round. These rounds, including the Finals, are in a 2–2–1 format. Home court advantage in any round belong to the higher-seeded team.

On 31 March 2019, Barça Lassa became the first team to clinch a playoff spot.^[1]

Teams in bold advance to the next round. The numbers to the left of each team indicate the team's seeding, and the numbers to the right indicate the result of games including result in bold of the team that won in that game.

All times are in Central European Summer Time (UTC+02:00)

All times are in Central European Summer Time (UTC+02:00)

All times are in Central European Summer Time (UTC+02:00)

This was the 19th playoff meeting between these two teams, with each team winning nine series.