İstanbul Başakşehir Futbol Kulübü (Turkish pronunciation: [isˈtɑnbuɫ bɑʃɑkʃeˈhiɾ futˈboɫ kulyˈby]) is a Turkish professional football club based in the Başakşehir district of Istanbul. The club is better known as İstanbul Başakşehir or, due to sponsorship, Medipol Başakşehir (Turkish pronunciation: [mediˈpoɫ bɑʃɑkʃeˈhiɾ]).
The club was founded in 1990 as İstanbul Büyükşehir Belediyespor (Istanbul Metropolitan Municipality). They first reached the highest level in Turkish Football in 2007–08. They play their home games at the Fatih Terim Stadium in Istanbul and are owned by the Ministry of Youth and Sports.