Ilocos Sur's 2nd congressional district is one of the two congressional districts of the Philippines in the province of Ilocos Sur. 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 city of Candon and adjacent municipalities of Alilem, Banayoyo, Burgos, Cervantes, Galimuyod, Gregorio del Pilar, Lidlidda, Nagbukel, Narvacan, Quirino, Salcedo, San Emilio, San Esteban, Santa, Santa Cruz, Santa Lucia, Santa Maria, Santiago, Sigay, Sugpon, Suyo and Tagudin. Santa became part of the district in 1919, after the creation of Abra that led to the dissolution of the 3rd district. It is currently represented in the 20th Congress by Kristine Singson-Meehan of the Nationalist People's Coalition (NPC) and Bileg Ti Ilokano (Bileg).