The Fontana del Formiello is a historic public fountain located at the rear exterior of the Castel Capuano, facing Piazza Enrico de Nicola, and across the street from the church and convent of Santa Caterina a Formiello in Naples, Italy. The term Formiello comes from the forms or containers for water spouts found in the convent. The fountain had been placed in storage during the late 19th century, and reconstructed at this site in 1930.