Siraha 3 is one of four parliamentary constituencies of Siraha District in Nepal.

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

[1]Siraha 3 incorporates Siraha Municipality, wards 1 and 2 of Naraha Rural Municipality, wards 1 and 5 of Bishnupur Rural Municipality, 1–3 of Arnama Rural Municipality and ward 1–12 of Golbazar Municipality.

It encompasses the following Province No.

2 Provincial Assembly segment