is a modern parish church in the district Appio Claudio, in Piazza Aruleno Celio Sabino, dedicated to Saint Polycarp
, bishop of Smyrna
It was designed by Giuseppe Nicolosi and completed in 1967, to an unusual plan consisting of a pentagon stretched along the vertical axis and topped by a dome having the plan of a six-pointed star. It is considered to be one of the more successful and interesting of Romes 1960s churches. The church was inaugurated on 15 July 1967 by the Cardinal Vicar Luigi Traglia.