The Boston Celtics won the most NBA championships. They won 17 NBA Titles (
The Lakers
Two 2012 and 2013
Houston Rockets
denver nuggets
LBJ's team the Cleveland Cavaliers
The team that won the Finnish Veikkausliiga in 2013 was HJK.
The team that won the Italian Serie A in 2013 was Juventus.
The Boston Celtics have won the most NBA Finals and thus the most NBA championships with 17.
The bulls won
The Philadelphia warriors.
Miami Heat.