The Roman Catholic Archdiocese of Tuguegarao is a Latin Church metropolitan archdiocese of the Catholic Church in the Philippines. Tuguegarao is a river delta city that became center of the archdiocese in the province of Cagayan, on the island of Luzon. Its seat is located at the Saint Peter the Apostle Metropolitan Cathedral.

Tuguegarao, officially the City of Tuguegarao, is a 3rd class component city and capital of the province of Cagayan, Philippines. According to the 2020 census, it has a population of 166,334 people, making it the most populous city in Cagayan Valley and Northeastern Luzon.