Barharia is a community development block and a town in the northern part of the Siwan District in the Indian state of Bihar.

Mirganj, Siwan, Barauli, and Gopalganj are nearby cities.

It was in the national news in 2001 when part of the block was flooded by the Daha River.

[2] According to the 2011 Census of India the total population of Barharia block is 321,292.

This article related to a location in Bihar is a stub.