The following is a timeline of the organizational changes in the National Basketball Association (NBA), including contractions, expansions, relocations, and divisional realignment. The league was formed as the Basketball Association of America (BAA) in 1946 and took its current name in 1949, when it merged with the National Basketball League (NBL). The histories of NBA franchises that were also members of the American Basketball League (ABL), NBL, National Pro Basketball League (NPBL), and American Basketball Association (ABA) are also included.
Team folded after this season † |
First season in BAA * |
Eastern | Western |
---|---|
Boston Celtics | Baltimore Bullets* |
New York Knicks | Chicago Stags |
Philadelphia Warriors | St. Louis Bombers |
Providence Steamrollers | Washington Capitols |
First season in BAA * | Only season in the league § | Folded after this season † |
Team merged from NBL ^ | First season in NBA * | Folded after this season † |
Team merged from the NBL, but then jumped to the NPBL after this season § | ||
Team merged from the NBL, but then folded after this season ^† |
Folded midway through this season † |
Folded after the 1952–53 season † |
Folded midway through the 1954–55 season † |
Eastern | Western |
---|---|
Boston Celtics | Fort Wayne Pistons |
New York Knicks | Minneapolis Lakers |
Philadelphia Warriors | Rochester Royals |
Syracuse Nationals | St. Louis Hawks |
Eastern | Western |
---|---|
Boston Celtics | Cincinnati Royals |
New York Knicks | Detroit Pistons |
Philadelphia Warriors | Minneapolis Lakers |
Syracuse Nationals | St. Louis Hawks |
Eastern | Western |
---|---|
Boston Celtics | Cincinnati Royals |
New York Knicks | Detroit Pistons |
Philadelphia Warriors | Los Angeles Lakers |
Syracuse Nationals | St. Louis Hawks |
First season in NBA * |
Eastern | Western |
---|---|
Boston Celtics | Chicago Packers* |
New York Knicks | Cincinnati Royals |
Philadelphia Warriors | Detroit Pistons |
Syracuse Nationals | Los Angeles Lakers |
St. Louis Hawks |
Eastern | Western |
---|---|
Boston Celtics | Chicago Zephyrs |
Cincinnati Royals | Detroit Pistons |
New York Knicks | Los Angeles Lakers |
Syracuse Nationals | San Francisco Warriors |
St. Louis Hawks |
First season in NBA * |
First season in NBA * |
1968–69 is first season in NBA * |
First season in NBA * |
First season in NBA * |
Team merged from ABA ^ |
1980–81 is first season in NBA * |
First season in NBA * |
First season in NBA * |
1995–96 is first season in NBA * |
The Charlotte Hornets relocated to New Orleans to become the New Orleans Hornets.
First season in NBA * |
The Seattle SuperSonics relocated to Oklahoma City to become the Oklahoma City Thunder.
The New Jersey Nets relocated to Brooklyn to become the Brooklyn Nets.
The New Orleans Hornets are renamed the New Orleans Pelicans.
The Charlotte Bobcats are renamed the Charlotte Hornets after the New Orleans Pelicans agree to return the original Charlotte Hornets' name, history, and records from 1988 to 2002 to the city of Charlotte. [1]