Roman Catholic Archdiocese of Dili

The Roman Catholic Archdiocese of Dili (Latin: Archidioecesis Diliensis; Portuguese: Arquidiocese de Díli; Tetum: Arkidioseze Dili) is a Latin Church archdiocese of the Catholic Church in Timor-Leste. Centered in Dili, the country's capital and largest city, it has two suffragan dioceses, Baucau and Maliana. The oldest of the Timor-Leste three dioceses, it was established in 1940 by Pope Pius XII. Its status was raised to a metropolitan archdiocese in 2019 by Pope Francis. The current archbishop of Dili since 2016 is Cardinal Virgílio do Carmo da Silva.

The Archdiocese of Dili serves over 740,000 Catholics across the municipalities of Atauro, Aileu, Ainaro, Dili, Ermera, Manufahi, and Oecusse, covering a total area of 4,775 square kilometres (1,844 sq mi). The mother church of the archdiocese is Immaculate Conception Cathedral in Dili. As of 2022, the archdiocese has 33 parishes and 234 missions, and is served by 74 secular priests and 1,024 religious priests, brothers, and sisters.

The archdiocese operates two seminaries, St. Peter and St. Paul Major Seminary and the historic Our Lady of Fatima Minor Seminary, as well as a number of primary and secondary schools. The archdiocese is also home to Universidade Católica Timorense, established in 2021, which operates under the auspices of the Conferência Episcopal Timorense.