Villa Mazziotti di Celso, Historic villa in Posillipo district, Naples, Italy.

Villa Mazziotti di Celso is a multi-story residential building in Posillipo featuring a basement level, ground floor with three main rooms, and an upper level with twelve rooms. The spaces are organized across different heights and overlook the surrounding neighborhood.

Villa Mazziotti was built in the 1840s on a vice-regal bastion at the spot of the Palazzo del Duca d'Aquale (1629), itself the earlier 15th-century Casino dell'Annunciata. In 1840 Francesco Antonio Mazziotti, a hero of Italian unification exiled from Cilento to Naples under surveillance by a June 1838 prefectural order, bought the villa on the Posillipo promontory. It is now a condominium.

The villa belonged to the Mazziotti family, barons of Celso, whose name it still carries. Francesco Antonio Mazziotti, a figure of Italian unification, was moved from Cilento to Naples under surveillance by a prefectoral order of June 1838 and bought several buildings here in 1840. The property is now a condominium, and the small beach to the west appears free of later structures in postcards of 1885 to 1913.

The property has two entrances: one shared with the adjacent Villa Roccaromana and a private gate for residential access. The dual entry points allow for different routes and help separate private from shared areas.

The villa appears in a German gouache, the only known view from the east, "seen from the grotto, with figures in costume". Baroness Olimpia Mazziotti di Celso Cosenza also painted the villa from the west; her oil painting is kept by her heirs. Postcards from 1885 to 1913 show the small beach to the west still free of other structures.