Santi Marcellino e Pietro al Laterano is a Roman catholic parish and titular church in Rome on the Via Merulana.

One of the oldest churches in Rome, it is dedicated to Saints Marcellinus and Peter, 4th century Roman martyrs, whose relics were brought here in 1256.

The first church on the site was built in the fourth century, not far from the Via Labicana's catacombs of Marcellinus and Peter, with an adjoining hospice which became a centre for pilgrims.

The cube-shaped exterior is divided by pilaster strips in a Neoclassical style, but with a late-Baroque elements, including a dome influenced by the architecture of Borromini.

The church has a Greek cross plan: the main altarpiece by Gaetano Lapis depicts the dedicatees' martyrdom.