1966 NBA playoffs

The 1966 NBA playoffs was the postseason tournament of the National Basketball Association's 1965–66 season. The tournament concluded with the Eastern Division champion Boston Celtics defeating the Western Division champion Los Angeles Lakers 4 games to 3 in the NBA Finals.

The Celtics won their eighth consecutive NBA title and ninth overall, defeating the Lakers in the Finals for a fifth straight time.

This was the last NBA playoffs under the "top team in each division gets a first-round bye" format established in 1955, although teams receiving a bye would be reused in 1975, and strictly for division winners from 1977–1983 (albeit in a four-round playoff format). the 1967 NBA playoffs featured an eight-team tournament with no first-round byes.

Bracket

 * Division winner

Bold Series winner

Italic Team with home-court advantage in NBA Finals

(2) Boston Celtics vs. (3) Cincinnati Royals
This was the third playoff meeting between these two teams, with the Celtics winning both prior meetings.

(2) Baltimore Bullets vs. (3) St. Louis Hawks
This was the second playoff meeting between these two teams, with the Bullets winning the first meeting.

(1) Philadelphia 76ers vs. (2) Boston Celtics
This was the 10th playoff meeting between these two teams, with the Celtics winning five of the first nine meetings.

(1) Los Angeles Lakers vs. (3) St. Louis Hawks
This was the eighth playoff meeting between these two teams, with the Hawks winning five of the first seven meetings.

NBA Finals: (E2) Boston Celtics vs. (W1) Los Angeles Lakers
This was the fifth playoff meeting between these two teams, with the Celtics winning the first four meetings.