Beykoz was founded in 1908. Team colours are black and yellow. The Beykoz football team played in Turkish First League in 8 seasons. The team played in Third League as Beykozspor 1908 AŞ., which is the fourth level of Turkish Football, and was promoted to the Second League in the 2007-2008 season as champions. The first American basketball player, playing in Turkey, Clev Cristy was player of TTNet Beykoz in the 1961 - 1962 season.
The team is sponsored by Türk Telekom Internet Service.
As of September 2007
Coach: Çetin Yılmaz
League Participations for Basketball
- First Level: 1988-1990 (as Sümerbank Beykozspor), 2005-2008
- Second Level: ?
League Participations for Football
- Turkish Super League: 1958–66
- TFF First League: 1966–71, 1972–79, 1980–84, 1986–91
- TFF Second League: 1971–72, 1979–80, 1984–86, 1991–01, 2007-2009
- TFF Third League: 2001–07, 2009-11
- Turkish Regional Amateur League: 2011–13
- Istanbul Super Amateur League: 2013-14
- Istanbul 1st Amateur League: 2014-
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