Santa Maria in Monticelli is a church in the rione of Regola in Rome, sited on the street of the same name. A church was founded at the site in the 12th century and reconsecrated by Innocent II in 1143. It was known as Sancta Maria in Monticellis Arenulae de Urbe, in a bull by Urban IV in 1264. Little remains of the medieval church, except for the bell-tower. The church was entirely reconstructed in 1716 by Matteo Sassi, on a commission by Clement XI, and in 1860 by Francesco Azzurri. The church is the home to the Curia Generalizia dei Padri Dottrinari.