Iloilo's 3rd congressional district is one of the five congressional districts of the Philippines in the province of Iloilo. It has been represented in the House of Representatives of the Philippines since 1916 and earlier in the Philippine Assembly from 1907 to 1916. The district consists of the municipalities of Badiangan, Bingawan, Cabatuan, Calinog, Janiuay, Lambunao, Maasin, Mina and Pototan. It is currently represented in the 18th Congress by Lorenz R. Defensor of the PDP–Laban.