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

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

[1]Saptari 1 incorporates Saptakoshi Rural Municipality, Agnisair Krishna Savaran Rural Municipality, Tirhut Rural Municipality, Kanchanrup Municipality and Hanumannagar Kanalini Municipality.

It encompasses the following Province No.

2 Provincial Assembly segment