The Diocese of Balanga is a Roman Catholic diocese located in the province of Bataan, Philippines. Established on June 29, 1975, it serves as a spiritual and administrative region for the Catholic Church, overseeing various parishes and communities within its jurisdiction. The diocese is part of the Ecclesiastical Province of San Fernando. The seat of the diocese is the Cathedral of St. Joseph the Worker in Balanga City. The diocese is dedicated to promoting the teachings of the Catholic faith and providing pastoral care to its members. It also engages in various social and community development programs to support the local population.