Sheohar Assembly constituency (Hindi pronunciation: Shivahar Vidhan Sabha Nirvachan Kshetra) is an assembly constituency in Sheohar district in the Indian state of Bihar.
As per orders of Delimitation of Parliamentary and Assembly constituencies Order, 2008, 22. Sheohar Assembly constituency is composed of the following: Sheohar, Piprarhi, Dumri Katsari and Purnahiya community development blocks.
Sheohar Assembly constituency is part of 4. Sheohar Lok Sabha constituency.