Question: what professional basketball team has won the most championships?
Answer: Boston Celtics - 17. 1957, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1968, 1969, 1974, 1976, 1981, 1984, 1986, 2008. Los Angeles Lakers - 16. ...  Golden State Warriors - 6. ...  Chicago Bulls - 6. ...  San Antonio Spurs - 5. ...  Philadelphia 76ers - 3. ...  Detroit Pistons - 3. ...  Miami Heat - 3.