What NBA team has the most championships in the modern era? The modern era is defined as post NBA/ABA league merger, 24 second clock and three-point basket.
The NBA professional basketball team with the most modern championships are the Los Angeles Lakers with 11 in 1980, 1982, 1985, 1987, 1988, 2000, 2001, 2002, 2009, 2010, 2020.