The 1957 NBA playoffs was the postseason tournament of the National Basketball Association's 1956-57 season. The tournament concluded with the Eastern Division champion Boston Celtics defeating the Western Division champion St. Louis Hawks 4 games to 3 in the NBA Finals. It was the first title in Celtics history; as of 2024, they have won the most NBA titles with 18. The Celtics and Hawks met in 4 out of 5 NBA Finals from 1957–1961, with the Celtics winning 3 out of 4. While the Hawks' dominance of the Western Division was succeeded by the Los Angeles Lakers afterward, Boston missed the NBA Finals just once between 1957–1969, and won the NBA title in every year but two. In the division semifinals, the Philadelphia Warriors were swept by the Syracuse Nationals 2–0. This was the first time in NBA history that the defending champions were swept in the opening round. The next time the defending champions were swept in the opening round was in 2007. It was also the only time in which the playoff series leading to the Final resulted in sweeps.

Bracket

Bold Series winner Italic Team with home-court advantage in NBA Finals

Division Tiebreakers

Western Division Tiebreakers

Fort Wayne Pistons @ St. Louis Hawks

Minneapolis Lakers @ St. Louis Hawks

Division Semifinals

Eastern Division Semifinals

(2) Syracuse Nationals vs. (3) Philadelphia Warriors

This was the fifth playoff meeting between these two teams, with the 76ers/Nationals winning three of the first four meetings.

Western Division Semifinals

(2) Minneapolis Lakers vs. (3) Fort Wayne Pistons

This was the fifth playoff meeting between these two teams, with the Lakers winning three of the first four meetings.

Division Finals

Eastern Division Finals

(1) Boston Celtics vs. (2) Syracuse Nationals

This was the sixth playoff meeting between these two teams, with the Nationals winning four of the first five meetings.

Western Division Finals

(1) St. Louis Hawks vs. (2) Minneapolis Lakers

This was the second playoff meeting between these two teams, with the Hawks winning the first meeting.

NBA Finals: (E1) Boston Celtics vs. (W1) St. Louis Hawks

This was the first playoff meeting between these two teams.