List of National Basketball Association retired numbers

As a way to honor key contributors including players, coaches, fans, broadcasters and announcers, National Basketball Association (NBA) teams often retire their jersey numbers, win totals or microphones. In the case of jersey numbers, they are usually no longer available for future players to wear, although they can ask for permission from players whose jerseys are retired. Teams usually display these numbers by hanging banners on the rafters inside their home arena. , three teams, Los Angeles Clippers, Memphis Grizzlies, and Toronto Raptors do not have any retired numbers, although the owner of the Memphis Grizzlies has stated that he will retire number 50 of Zach Randolph, 33 of Marc Gasol, number 11 of Mike Conley, and number 9 of Tony Allen in the future.
List.
Honored numbers.
Cleveland has introduced in 2019 a Wall of Honor, which honors former players and other personnel. 
Phoenix has honored some players in the Suns Ring of Honor without retiring their numbers. 
The Lakers have also honored their most notable players during the stint of the franchise in Minneapolis. Although their numbers are displayed on the banners, only the No. 22 and No. 34 are officially retired, since they were retired for Elgin Baylor and Shaquille O'Neal respectively.
Retired by multiple teams.
A handful of players who had notable careers for multiple teams have had their numbers retired by each team. A few players have had their numbers retired by teams they never played for.
Retired in honor of multiple players.
The following numbers have been retired in honor of multiple players: