Castagna may refer to: People Andrea del Castagno (c.1419–1457), Italian painter Cristina Castagna (1977–2009), Italian mountaineer Filippo Castagna (1765–1830), Maltese politician William J. Castagna (1924–2020), American jurist Companies Carrozzeria Castagna, an Italian coachbuilding company from Milan Places Castagna, Catanzaro, a town in the Calabria region of southern Italy Castel Castagna, a town in the Abruzzo region of central Italy Castagna (restaurant), a restaurant in Portland, Oregon, United States Italian-language surnames