Cleveland Cavaliers hasn't won any NBA championships yet. They had one conference title though in 2007 where they faced the San Antonio Spurs. They were dominated by the Spurs 4-0.
As of today, 0.
They have never won one.
The Cavaliers play in Cleveland, Ohio. The Cavaliers have not won a NBA championship in their 43 years of being in the NBA. The Cleveland Cavaliers are owned by Dan Gilbert.