About İstanbulspor

İstanbulspor is a Turkish football club from Istanbul, founded on 4 January 1926 by students of Istanbul High School led by Kemal Halim Gürgen. One of the first sports clubs of the Republican era, it won both the Istanbul League and the Turkish Football Championship in 1931–32, the greatest success in its history. For decades it was regarded as Istanbul's fourth club after Beşiktaş, Galatasaray and Fenerbahçe.

Run by the Istanbul High School foundation until 1990, the club moved between the divisions and even dropped to amateur level. In 1990 it was bought by Cem Uzan's Uzan Holding, returned to the top flight in 1995 and finished fourth in 1997–98, earning a place in the 1998–99 UEFA Cup.

When the Uzan family withdrew its support in 2001 the club fell into financial crisis; it was taken over by the state in 2003 and relegated from the Süper Lig in 2005. İstanbulspor later returned to the top division in 2022, playing its home matches at the Necmi Kadıoğlu Stadium.