|Santa Maria Regina Pacis a Ostia Lido|
|English name:||St Mary, Queen of Peace at the Ostia Lido|
|Dedication:||Blessed Virgin Mary|
|Address:||Piazza Regina Pacis 13|
Santa Maria Regina Pacis a Ostia Lido is a modern parish and titular church at Piazza Regina Pacis 13, in the centre of Lido di Ostia near where the Via di Mare meets the sea. Picture of the church at Wikimedia Commons. 
This large, impressive and important church was conceived as a votive offering to Our Lady in order to invoke her help in ending the First World War and so bring peace. The project was delayed, so the work only started in 1919 and was finished in 1928. The completed church was entrusted to the Pallotines. It remains the central church of Lido di Ostia, which is more of a self-contained town than a suburb of Rome despite being in the municipality.
The dedication is to the Blessed Virgin Mary. It may be noted that the Diocese of Rome uses the Marian title Regina Pacis which is Latin, and not Regina della Pace which is the Italian.
The present titular is Laurent Monsengwo Pasinya.
It was designed by Giulio Magni, on the plan of a Latin cross with side aisles and an octagonal dome over the crossing. Red brick was used, with travertine stone for the detailing. The approach is up a monumental stairway. The nave end of the façade is framed by two pairs of enormous brick pillars with stone capitals supporting an entablature with a dedicatory inscription and a triangular pediment above with a coat of arms inserted. These pilasters enclose a similarly monumental arch in stone, with columns in the round and enclosing a set of three windows fitted into the curve. The doorway has a triangular pediment. The aisle ends have square pavilions with plain stone entablatures and vertical rectangular windows. There is a campanile of traditional design by the right transept. The dome is slightly small for the scale of the building, is in stone with a window on each face framed by columns, a lead cupola and a lantern on top.
The rich interior is neo-Baroque in style, painted yellow with white detailing. The arcade pillars have Corinthian semi-columns attached to support the roof-ribs. The altar is in polychrome marble, the tabernacle being framed by pillars and pediment in red.