The Big Three is the colloquial name given to Beşiktaş J.K., Fenerbahçe S.K. and Galatasaray S.K., the three most successful sports clubs in Turkey. They all are based in Istanbul.

In Dutch sports, The Big Three is the nickname for the three most successful rivalling football clubs in the Netherlands: Ajax from Amsterdam, Feyenoord from Rotterdam and PSV from Eindhoven. Collectively they amounted to 77 of the 134 Dutch Football Championships ever played, and 62 of a possible 70 championships since the introduction of professional football in 1954. The three clubs generally end up sharing the top three positions and contending for the title. None of them has been relegated from the Eredivisie either, having been participants in all editions since Dutch football was merged into a single top-level competition in the 1956–57 season.