Marsico Nuovo Cathedral (Italian: Concattedrale di Marsico Nuovo; Concattedrale di Santa Maria Assunta e San Giorgio) is a Roman Catholic cathedral, dedicated to the Assumption of the Virgin Mary and Saint George, in the town of Marsico Nuovo, province of Potenza, region of Basilicata, Italy.
The structure was erected in 1131 under the patronage of the bishop Enrico and count Goffredo.
A new church was commissioned by the bishop Ignazio Maroldo, and completed by 1829, but an earthquake razed the building in 1857.
The belltower dates from 1293, commissioned by Count Tommaso Sanseverino.
The main portal dates from the 16th century and is surrounded by an 18th-century relief of the Virgin.