Baisi Assembly constituency is an assembly constituency in Purnea district in the Indian state of Bihar.
As per Delimitation of Parliamentary and Assembly constituencies Order, 2008, No 57 Baisi Assembly constituency is composed of the following: Baisi and Dagarua community development blocks.
Baisi Assembly constituency is part of No 10 Kishanganj (Lok Sabha constituency).
^by-election
In the 2020 Bihar Assembly Elections, Syed Ruknuddin Ahmad of AIMIM defeated BJP Vinod Kumar.
In the 2015 Bihar Assembly Elections, Abdus Subhan of RJD defeated independent Binod Kumar.