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 the 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 Beykoz in the 1961 – 1962 season.
The team is sponsored by Türk Telekom Internet Service.
The basketball section of the club have won the Turkish Basketball Championship in 1946.
League Participations for Basketball
- First Level: 1988–1990 (as Sümerbank Beykozspor), 2005–2008
- Second Level: ?, 2008–2011
- Regional (Third) Level: 2011–
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–
Note: Beykozspor finished İstanbul Super Amateur League 3rd Group as 11th and relegated to İstanbul First Amateur League. But, they took place of İstanbul PTT and became Beykozspor 1908. They finished SAL 7th Group as 4th in 2014–15 season 
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