Bulacan's 4th congressional district is one of the seven congressional districts of the Philippines in the province of Bulacan. It has been represented in the House of Representatives since 1987. The district consists of the city of Meycauayan and adjacent municipalities in southern Bulacan, namely Marilao, and Obando. It is currently represented in the 19th Congress by Linabelle Villarica of the PDP–Laban.