The Istanbul Friday League was founded in 1912, and replaced the Istanbul Sunday League in 1915. Seven clubs took part in the league when it was first founded in 1912: Anadoluspor, Darülfünun, Terbiye-i Bedeniye, Türk İdman Ocağı, Mümaresatı Bedeniye, Şehremini, and Fenerbahçe S.K.
Champions
YearWinner1915–1916 Galatasaray1916–1917Altınordu İdman Yurdu1917–1918Altınordu İdman Yurdu1918–1919Unaccomplished due to Mudros Armistice1919–1920Aborted1920–1921 Fenerbahçe 1921–1922 Galatasaray1922–1923 Fenerbahçe
Past winners ClubTimes wonGalatasaray S.K.2Fenerbahçe S.K.2Altınordu İdman Yurdu SK2