Boston Celtics accomplishments and records

This is a comprehensive list of the accomplishments and records of the Boston Celtics. The Celtics are an American professional basketball team currently playing in the National Basketball Association.
The Celtics have won an NBA-record 18 championships. Forty-eight members of the Naismith Memorial Basketball Hall of Fame are connected to the Celtics, and the franchise has retired 23 jersey numbers, more than any other American sports team. As of December 2023, the Celtics have won more NBA regular season games than any other team.

Playoffs

Championships (18)

The Celtics' 18 NBA Championships are the most of any NBA franchise. Boston's first 13 championships were won as the Walter A. Brown Trophy, and five recent championships were won as the Larry O'Brien Championship Trophy.

Conference titles (11)

Since 2022, the Eastern Conference championship trophy was renamed the Bob Cousy Trophy in honor of the legendary Celtics player.

Division titles (35)

Since 2022, the Atlantic Division championship was awarded to that division's first-place team, and was named the Nat "Sweetwater" Clifton Trophy in honor of the first African American player to sign an NBA contract.

Regular season titles (19)

Since 2023, the NBA has awarded the Maurice Podoloff Trophy to the team who finished with the best overall record in the regular season.

2024

Hall of Fame

37 people were inducted in the Naismith Memorial Basketball Hall of Fame as players, 6 – as coaches, 6 – as contributors.
Additionally, Johnny Most and Mike Gorman were honored with the Hall of Fame's Curt Gowdy Media Award. Most was awarded in 1993 for his 37-year career as the Celtics radio announcer, while Gorman was awarded in 2021 for his 40-year career as the Celtics television announcer.
Notes:¹ In total, Heinsohn was inducted into the Hall of Fame twice – as player and as coach.² In total, Bird was inducted into the Hall of Fame twice – as player and as a member of the 1992 Olympic team.³ In total, Russell was inducted into the Hall of Fame twice – as player and as coach.⁴ Sanders was also coached the team in 1978.

Retired numbers

The Celtics have retired 23 numbers, the most of any professional sports franchise in North America. ¹ Also served as head coach. Retired league-wide in 2022.² Also served as head coach ; as broadcaster.³ Also served as head coach.⁴ Also served as head coach.⁵ Loscutoff, who wore #18, asked that his legacy be honored by allowing other Celtics to wear his number in the future. On one of the banners of retired numbers at the TD Garden, Loscutoff is represented by a square with the letters "LOSCY". #18 was later retired for Dave Cowens.⁶ Also served as head coach.⁷ Also served as broadcaster ; briefly wore No. 30 in 1977–78.⁸ ''Lewis died of cardiac arrest while still playing for the team; number retired posthumously.''