2008–09 TFF First League

The 2008–09 TFF First League (also known as Bank Asya First League due to sponsoring reasons) was the second-level football league of Turkey and the 46th season since its establishment in 1963–64. At the end of the season in which 18 teams competed in a single group, Manisaspor and Diyarbakırspor, which finished the league in the first two places, and the play-off winner Kasımpaşa were promoted to the upper league, while Sakaryaspor, Güngören Belediyespor and Malatyaspor, which were in the last three places, were relegated.

Promotion play-offs
The Promotion play-offs will be played in Yenikent Asaş Stadium in Ankara. The Semi-final matches will take place on May 15. The League's third-placed team will play the sixth-placed team and the fourth-placed team will play the fifth-placed team. The winners of these matches will play on May 17 in the final match. The winner of this match will play in Süper Lig in the 2009–2010 season.