Siwan district is one of the districts of Bihar state, India. Siwan town is the administrative headquarters of this district. Siwan district is a part of Saran division since 1972. The district was previously also known as Aliganj Siwan after the name of Raja Ali Bux Khan. Siwan has historical and mythological importance attached to it. There is ancient ashram of sage Dronacharya in the Don village. It is believed that Dronacharya had spent his time here. The Member of Parliament from Siwan is Vijaylakshmi Devi.