Santa Caterina a Formiello is a church in Naples, in southern Italy, located at the extreme eastern end of the old historic center of the city, on Via Carbonara and Piazza Enrico de Nicola, near the gate called Porta Capuana.

Diagonally across the street and South is the Fontana del Formiello against the rear wall of the imposing Castel Capuano.

It was attached to an ancient convent originally linked to the Celestine order and which passed to the Dominican fathers after 1498.

The church has a single-aisle Latin cross interior covered by a barrel vault with five chapels on either side.

A chapel on the other side has a canvas of St Dominic defeats the Albigensian Heretics by Giacomo del Po: the statues are by Columbo Napolitano.