Istanbul Basketball League
The Istanbul Basketball League was a regional basketball league competition in Turkey, that was run by the Turkish Basketball Federation from 1926 to 1966. The league lost its first level status after the nationwide Turkish Super League was introduced in the 1966–67 season.
Performance by club
| Club | Titles | Runners-up |
| Galatasaray | 15 | 9 |
| Fenerbahçe | 7 | 3 |
| Maccabi | 6 | – |
| Kurtuluş | 3 | 2 |
| Modaspor | 1 | 4 |
| Darüşşafaka | 1 | – |
| İstanbulspor | 1 | – |
| Deniz Harp Okulu | 1 | – |
| Beyoğluspor | – | 5 |
| İTÜ | – | 2 |
| Beşiktaş | – | 1 |
| Beykoz | – | 1 |