Negros Occidental's 1st congressional district is one of the six congressional districts of the Philippines in the province of Negros Occidental. 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 northern Negros Occidental cities of Escalante and San Carlos, as well as adjacent municipalities of Calatrava, Don Salvador Benedicto and Toboso. It is currently represented in the 20th Congress by Julio A. Ledesma IV of the Nationalist People's Coalition (NPC).