Santa Maria Regina Pacis a Ostia Lido is a 20th-century parochial church and titular church in Ostia, southwest of Rome, dedicated to Mary, Queen of Peace.
In 1916, it was suggested to Vincenzo Vannutelli, Bishop of Ostia, to construct a church to Our Lady, Queen of Peace, in order to pray for an end to the First World War.
The church was built in 1919âÂÂ28. It has been visited by Pope Paul VI (1968), Pope John Paul II (1980), Pope Francis (2015) and Pope Leo XIV (2026).
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The church was made a titular church on 5 March 1973 to be held by a cardinal priest.
In basilica form with side chapels and transept. The nave is covered by a round vault divided into sections, sculpted by the lunettes of the side windows. The internal columns are high under the cornice, in imitation hammered travertine with octagonal plinths and Corinthian capitals.