Castiglioni is an Italian surname. People with this surname include: * Giannino Castiglioni (1884–1971), Italian artist * Achille Castiglioni (1918–2002), Italian architect and industrial designer * Livio Castiglioni (1911–1979), Italian architect and industrial designer * Pier Giacomo Castiglioni (1913–1968), Italian architect and industrial designer * Francesco Saverio Castiglioni (1761–1830), Pope Pius VIII * Goffredo da Castiglione / Godfrey Castiglioni (died 1241), Pope Celestine IV * St. Buono Castiglioni (818–822), Bishop of Milan * St. Honoratus Castiglioni (568–572), Bishop of Milan * Teresa Ciceri Castiglioni (1750–1821) was an Italian inventor, agronomist * Arturo Castiglioni (1874–1952), Italian-American medical historian * Camillo Castiglioni (1879–1961), Austrian financier and banker * Consuelo Castiglioni, b. 1959, Chilean-Italian fashion designer * Luis Alberto Castiglioni Soria, former vice president of Paraguay * Niccolò Castiglioni (1932–1996), Italian composer and pianist

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