Türkiye İş Bankasi A.Ş. was founded on August 26, 1924, as the First National Bank of the Republican Period, under the directives of Atatürk, in accordance with decisions taken at the First Congress of Economy, held in Izmir. Türkiye İş Bankasi, under the leadership of the first General Director Celal Bayar, began providing services in two branches and with 37 staff members.