Sub-districts (Tehsils) List of Siwan
A sub-district in an administrative division that is smaller than a district. A district can have multiple sub-districts. In north India, the sub-district called as a Tehsil. The other terms of sub-district such as taluks, subdivisions, mandals, circles are officially used in the administration of respective states.
A little about Siwan
Siwan is district in Bihar state of India. There are total 19 sub-districts in Siwan.
You can also see the block list of Siwan and village list of Siwan.
Here are the full list of sub-districts of Siwan.