The 1989 NBA playoffs was the postseason tournament of the National Basketball Association's 1988–89 season. The tournament concluded with the Eastern Conference champion Detroit Pistons defeating the Western Conference champion Los Angeles Lakers 4 games to 0 in the NBA Finals. Joe Dumars was named NBA Finals MVP. The Pistons had one of the most dominant playoff runs in NBA history, finishing 15–2 with their only losses to the Chicago Bulls in the Eastern Conference Finals. This NBA playoffs also holds the record for the most sweeps in an entire NBA playoffs with 9 out of 15 series being decided in just 3 or 4 games.

The Detroit Pistons are an American professional basketball team based in Detroit. The Pistons compete in the National Basketball Association (NBA) as a member of the Central Division of the Eastern Conference. The team plays its home games at Little Caesars Arena, located in Midtown Detroit. The team was founded as the Fort Wayne Zollner Pistons, a semi-professional company basketball team based in Fort Wayne, Indiana, in 1937. The club would turn professional in 1941 as a member of the National Basketball League (NBL), where they won two NBL championships: in 1944 and 1945. The Pistons later joined the Basketball Association of America (BAA) in 1948. The NBL and BAA merged to become the NBA in 1949, and the Pistons became part of the merged league. In 1957, the franchise moved to Detroit. The Pistons have won three NBA championships: in 1989, 1990 and 2004.