The pro sports team that has won the most championships are the Boston Celtics. They won eight consecutive championships from 1959 to 1966.
Ferrari, with 16 constructors championships
The New York Yankees have the most championships in any sports history. They have a total of 26 championships and have appeared in the championship 39 times.
soccer
UCLA
Alabama
Bill Russell
Lakers
the soccerroos
Alaska
duke
Stanford with 540