Sarlahi 4 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]Salahi 4 incorporates Godaita municipality ,Dhankaul Rural Municipality, Ramnagar Rural Municipality, Balara Municipality, wards 1–4 and 13–15 of Barahathawa Municipality, wards 1–4 of Bishnu Rural Municipality and wards 14–3 of Basbariya Rural Municipality.

It encompasses the following Province No.

2 Provincial Assembly segment