San Carlo ai Catinari, Baroque church in Piazza Benedetto Cairoli, Rome, Italy

San Carlo ai Catinari is a Baroque church on Piazza Benedetto Cairoli. Its travertine facade, built 1635–38 to a design by Giovanni Battista Soria, has two tiers: the lower with three portals and a clock, the upper with arched windows and a triangular pediment. The facade bears the inscription "S. CAROLO AI CATINARI" and the name of Cardinal Leni. The interior is a Greek cross with a large dome.

The Barnabites built the church from 1611 on land bought beside their too-small San Biagio all'Anello, which was razed in 1618; the new name was then formally given to the parish. Rosato Rosati designed it between 1612 and 1620 at the expense of Cardinal Giambattista Leni, and Giovanni Battista Soria's travertine facade followed in 1635–38. The church was consecrated only in 1722.

The name "ai Catinari" comes from the wooden basin (catini) makers whose workshops stood nearby when the church was built. The Barnabites, founded by Antonio Maria Zaccaria, still give the church its character: the high altar carries Borromeo's motto Humilitas, and the skull of St. Febronia of Nisibis is shown in the altar's fenestella confessionis.

The church opens regularly to visitors who want to explore the interior, with the entrance on Piazza Benedetto Cairoli. It helps to visit in the morning when light streams through the windows and the frescoes are easiest to see and appreciate.

The dome here ranks among the largest in Rome and displays 17th-century craftsmanship that still impresses visitors today. The detailed frescoes beneath the dome show how skillfully artists of that era painted religious scenes across such vast expanses.