San Carlo ai Catinari, also called Santi Biagio e Carlo ai Catinari is an early-Baroque style church in Rome, Italy. It is located on Piazza Benedetto Cairoli, 117 just off the corner of Via Arenula and Via dei Falegnami, a few blocks south of the church of Sant'Andrea della Valle.
The attribute ai Catinari refers to the presence, at the time of its construction, of the many makers of wooden basins who worked in the area. The church was commissioned by the Order of the Barnabites and funded by the Milanese community in Rome to honour their fellow Milanese St. Charles Borromeo . It is one of at least three Roman churches dedicated to him, including San Carlo al Corso and San Carlo alle Quattro Fontane .
