Chiraia (Vidhan Sabha constituency) (Hindi: चिड़ाइआ विधान सभा निर्वाचन क्षेत्र) is an assembly constituency in Purvi Champaran district in the Indian state of Bihar.
As per orders of Delimitation of Parliamentary and Assembly constituencies Order, 2008, 20. Chiraia (Vidhan Sabha constituency) is composed of the following: Chiraia and Patahi community development blocks.
Chiraia (Vidhan Sabha constituency) is part of 4. Sheohar (Lok Sabha constituency).
In the November 2010 state assembly elections, Avaneesh Kumar Singh of BJP won the newly formed 20 Chiraia assembly seat defeating his nearest rival Laxmi Narayan Pr. Yadav of RJD.