The 1985 NBA playoffs was the postseason tournament of the National Basketball Association's 1984–85 season.

The tournament concluded with the Western Conference champion Los Angeles Lakers defeating the Eastern Conference champion Boston Celtics 4 games to 2 in the NBA Finals.

The Lakers had been unsuccessful in their previous eight attempts to defeat the Celtics in the NBA Finals, losing 7 times from 1959–1969 and 1984.

The Philadelphia 76ers, on the other hand, advanced to the conference finals for the fifth time in six years, but would not reach that level again until 2001.

Games 3 and 4 of the Eastern Conference Finals at the Spectrum forced a Phil Collins concert at the arena to be canceled so that he would play the Philadelphia half of Live Aid, as noted by Charlie Van Dyke when he sub-hosted an episode of American Top 40 on July 6 of that year.