Zamboanga del Norte's 3rd congressional district is one of the three congressional districts of the Philippines in the province of Zamboanga del Norte. It has been represented in the House of Representatives since 1987. The district encompasses the southern half of the province consisting of the municipalities of Baliguian, Godod, Gutalac, Kalawit, Labason, Leon B. Postigo, Liloy, Salug, Sibuco, Siocon, Sirawai and Tampilisan. It is currently represented in the 20th Congress by Ian Amatong of the Liberal Party (LP).