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

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

[1]Mahottari 3 incorporates Matihani Municipality, Jaleshwar Municipality, wards 8–10 of Manara Shiswa Municipality, wards 1–5 and 7 of Pipra Rural Municipality and ward s1–5 of Ekdara Rural Municipality.

It encompasses the following Province No.

2 Provincial Assembly segment