Bill Russell is the basketball player with the most championship rings. He won 11rings in 13seasons with the Celtics and he won 2 more as a coach of the Celtics.
the boston celtics
Golden State won the NBA Championship
What college basketball team has the most losses?
UCLA, eleven times.
bill Russell of the Boston celtics with 10
The Boston Celtics Have Won The Most Championships!!!!!!!!! Go Celtics