Who had or has the greatest sports dynasty?
The Yankees. 40 Pennants and 27 World Championships.
I would say the Yankees or Barcelona
Although there have been many great dynasties, I think the current run by the Patriots has had the least down seasons.
UCONN womens basketball and Iowa Hawkeye wrestling have to be in the discussion. Even when they have been bad, they are really really good.
Yankees, Habs, Celtics