Rautahat 1 is one of four parliamentary constituencies of Rautahat District in Nepal.

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

[1]Rautahat 1 incorporates Rajdevi Municipality, Gaur Municipality, Madhav Narayan Municipality, Yamunamai Rural Municipality, Durga Bhagwati Rural Municipality, ward 1 of Garuda Municipality and wards 6–8 of Gadhimai Municipality.

It encompasses the following Province No.

2 Provincial Assembly segment