From 1923–24 to 1950–51 the league was called Istanbul League. The name was later changed and became Istanbul Professional League in the 1952 season, as professionalism was introduced by the Turkish Football Federation in 1951.
Between 1923-24 and 1950-51, the league was called the Istanbul League. The name changed to the Istanbul Professional League in 1952, marking a shift towards professionalism introduced by the Turkish Football Federation in 1951.