The Cathedral Basilica of SS Peter and Cecilia () is a Roman Catholic church building in Mar del Plata, Argentina.
Built in Neogothic style, it is dedicated to St. Peter the Apostle and St. Cecilia.
Declared a minor basilica by Pius XI in 1924, upon the creation of the Roman Catholic Diocese of Mar del Plata in 1957 it became its cathedral church.
(IN SPANISH)