Sarlahi 2 is one of four parliamentary constituencies of Sarlahi District in Nepal.

This constituency came into existence on the Constituency Delimitation Commission (CDC) report submitted on 31 August 2017.

[1]Sarlahi 2 incorporates Parsa Rural Municipality, Haripurwa Municipality, Bramhapuri Rural Municipality, Malangwa Municipality, Kaudena Rural Municipality, wards 8–10 of Kabilasi Municipality, wards 5–8 of Bishnu Rural Municipality and ward 15 of Ishwarpur Municipality.

It encompasses the following Province No.

2 Provincial Assembly segment