| Türkiye Basketbol Ligi | |
| Country: | Turkey |
| Confed: | FIBA Europe |
| First: | 1969–70 |
| Teams: | 18 |
| Promotion: | Basketbol Süper Ligi |
| Relegation: | TB2L |
| Levels: | 2 |
| Pyramid: | Turkish basketball league system |
| Confed Cup: | TBL Federation Cup |
| Champions: | Manisa BB (1st title) |
| Season: | 2021–22 |
| Most Champs: | Tofaş (4 titles) |
| Website: | Link |
The Turkish Basketball First League (tr|Türkiye Basketbol Ligi; TBL), is the second-tier level league of professional club basketball in Turkey. The league was previously known as Turkish Basketball Second League (TB2L).
There are a total of 18 teams participating in the league for the 2023-24 TBL season. Each team plays each other in their group twice during the regular season. Team finishes at first place promotes to the top-tier level Turkish Basketball Super League (BSL) for the next season, teams ranked 2nd place to 9th place, compete in playoff format and winner of the playoff also promotes. The last two teams are relegated to the third-tier level Turkish Basketball Second League.
| width=80 | Year | width=200 | Champions | width=50 | Result | width=200 | Runners-up |
|---|---|---|---|---|---|---|---|
| 2012–13[1] | Bandırma Kırmızı | 73–64 | Torku Selçuk Üniversitesi | ||||
| 2013–14[2] | İstanbul BŞB | 94–41 | Akhisar Belediyespor | ||||
| 2014–15[3] | Best Balıkesir | 102–89 | Sinpaş Denizli Basket | ||||
| 2024–25 Türkiye Basketbol Ligi (TBL) Teams | |||||
| Team | City | District | Arena | Capacity[4] | |
| Balıkesir BB | Balıkesir | Karesi | Kurtdereli Spor Salonu | 1.500 | |
| Çağdaş Bodrumspor | Muğla | Bodrum | Bodrum Spor Salonu | 1.000 | |
| Çayırova Belediyesi | Kocaeli | Çayırova | Çayırova Spor Salonu | 1.000 | |
| Esenler Erokspor | Istanbul | Esenler | Ahmet Cömert Sport Hall | 3.500 | |
| Fenerbahçe Koleji Novotel | Istanbul | Ataşehir | Fenerbahçe Metro Enerji Spor Salonu | 2.500 | |
| Final Spor | Bursa | Nilüfer | N.Süleymenoğlu S.salonu | 2.100 | |
| Gaziantep Basketbol | Gaziantep | Şahinbey | Karataş Şahinbey Sport Hall | 6.400 | |
| Harem Spor | Istanbul | Bahçelievler | Şehit Mustafa Özel Spor Kompleksi | 2.100 | |
| iLab Basketbol | Istanbul | Sarıyer | BJK Akatlar Arena | 3.200 | |
| İstanbul Anka Spor | Istanbul | Bakırköy | Ahmet Cömert Sport Hall | 1.350 | |
| Kapaklıspor | Tekirdağ | Kapaklı | Çerkezköy Organize Sanayi Bölgesi Spor Salonu | 500 | |
| Konyaspor | Konya | Selçuklu | Selçuklu Belediyesi Spor Salonu | 1.350 | |
| MKE Ankaragücü Basketbol | Ankara | Mamak | Mamak Belediyesi Hidayet Türkoğlu Spor Salonu | 4.200 | |
| OGM Ormanspor | Ankara | Yenimahalle | M. Sait Zarifoğlu Spor Salonu | 2.000 | |
| Pizzabulls CO Basket | Istanbul | Küçükçekmece | Küçükçekmece Halkalı Spor Salonu | 1.452 | |
| Shipeedy Lojistik Bandırma Bordo Basketbol | Balıkesir | Bandırma | Bandırma 17 Eylül Üniversitesi Spor Salonu | 2.000 | |
| TED Ankara Kolejliler | Ankara | Gölbaşı | Gölbaşı Spor Salonu | ||
| Trabzonspor | Trabzon | Pelitli | Hayri Gür Arena | 7.500 | |
Rebah Sıdalı