Lakhisarai Assembly constituency is one of 243 constituencies of legislative assembly of Bihar. It is part of Munger Lok Sabha constituency along with other assembly constituencies viz. Suryagarha, Munger and Jamalpur.
Lakhisarai comprises Blocks Ramgarh Chowk, Halsi & Barahiya; Gram Panchayats Amahara, Morma, Balgudar, Savikpur, Kachhiyana, Bilauri, Damodarpur & Lakhisarai (M) of Lakhisarai CD Block.