Basilica in di S. Giovanni in Laterano. A lateráni bazilika vagy Lateráni Keresztelő Szent János-főszékesegyház (olaszul Basilica di San Giovanni in Laterano) a Római egyházmegye székesegyháza.

Postcard of the Archbasilica of St. John Lateran. Cathedral of the Most Holy Savior and of Saints John the Baptist and the Evangelist in the Lateran, (Italian: Santissimo Salvatore e Santi Giovanni Battista ed Evangelista in Laterano) – also known as the Papal Archbasilica of St. John [in] Lateran, St. John Lateran, or the Lateran Basilica – is the cathedral church of the Diocese of Rome in the city of Rome, Italy and therefore houses the cathedra, or ecclesiastical seat, of the Bishop of Rome, the Pope.