Carlo Fontana (1634/1638–1714) was an Italian architect originating from today's Canton Ticino, who was in part responsible for the classicizing direction taken by Late Baroque Roman architecture.

Sant'Andrea della Valle is a minor basilica in the rione of Sant'Eustachio of the city of Rome, Italy. The basilica is the general seat for the religious order of the Theatines. It is located at Piazza Vidoni, at the intersection of Corso Vittorio Emanuele and Corso Rinascimento.