Ballia Assembly constituency was an assembly constituency in Begusarai district in the Indian state of Bihar. As a consequence of the orders of the Delimitation Commission of India, Ballia Assembly constituency ceased to exist in 2010. It was a part of Balia Lok Sabha constituency.This assembly region is now a part of new Sahebpur Kamal Assembly. Ballia Assembly constituency comprised and Sahebpur Kamal Blocks.