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.