The department of Tafí Viejo is a department of the province of Tucumán, created in 1907 by the reform of the provincial constitution, which divided the old department Tafí. Its head is the homonymous city. Bordered on the north by the department Trancas, east to Burruyacú and Cruz Alta, south of Capital, Yerba Buena and Lules, and west to Tafí del Valle.