The pro sports team that has won the most championships are the Boston Celtics. They won eight consecutive championships from 1959 to 1966.
The U.S sports team that has the most titles is the NEW YORK YANKEES. They have 27 World Series championships.
In the southeastern conference which team has the most conference championships in all sports combined
The Bruins have won 111 NCAA team championships, the most of any program.
New York Yankees- 27 World Series victories
Id have to say the New York Yankees with 22