Sira is a city and taluk headquarters of Sira Taluk of Tumkur district in the state of Karnataka, India. It lies on the AH 47, NH 48. It is the second largest city in the district after the headquarters by population, area and economy. It is the fastest developing city in the district. The State Capital city, Bengaluru, is 120 km from Sira. It is known for its historical significance as a political and military center and for being the capital of Imperial Sira Subah in the early 1700s.