The Archdiocese of Zamboanga (Latin name: Archdiocesis Zamboangensis) is a Catholic archdiocese in the Philippines. Its present jurisdiction includes Zamboanga City, with suffragans in Basilan (Territorial Prelature of Isabela) and Zamboanga Sibugay (Diocese of Ipil). It became Mindanao's first diocese in 1910, and was established as the second archdiocese of Mindanao in 1958. Today, the archdiocese covers a land area of 1,648 square kilometers and has a population of 442,345, of which 81 per cent are Catholics. The archdiocese includes 27 parishes and two quasi-parishes served by 49 diocesan and 18 religious priests. There are also 51 religious sisters working in the archdiocese. Following the death of Romulo T. Dela Cruz on December 10, 2021, the Metropolitan See is considered as vacant