The Basilica of San Giovanni dei Fiorentini ("Saint John of the Florentines") is a minor basilica and a titular church in the Ponte rione of Rome, Italy.
Dedicated to St. John the Baptist, the protector of Florence, the new church for the Florentine community in Rome was started in the 16th century and completed in the early 18th, and is the national church of Florence in Rome.
Antonio da Sangallo the Younger (12 April 1484 – 3 August 1546), also known as Antonio Cordiani, was an Italian architect active during the Renaissance, mainly in Rome and the Papal States. He worked on the design of St. Peter's Basilica in the Vatican City, and was also an engineer who restored several buildings. His success was greatly due to his contracts with renowned artists during his time. Sangallo died in Terni, Italy, and was buried in St. Peter’s Basilica.