Bibhutipur Assembly constituency is an assembly constituency in Samastipur district in the Indian state of Bihar.

As per Delimitation of Parliamentary and Assembly constituencies Order, 2008, No.

138 Bibhutipur Assembly constituency is composed of the following: Bibhutipur community development block; Bulakipur, Kamrawn, Malpur Purwaripatti, Rampur Jalalpur, Narhan estate, Bambaiya Harlal and Ajnaul gram panchayats of Dalsinghsarai CD Block.

[1] The assembly constituency consists 2.23 lakh voters and is dominated by the Kushwahas.

It has been observed in the successive elections, by studying the voting pattern, that Kushwaha voters voting en masse decides the victory of a candidate.