Flavio Chigi (8 September 1711 – 12 July 1771), Prince of Farnese, Duke of Ariccia and Prince of the Holy Roman Empire, was an Italian Roman Catholic cardinal. He was a member of the noble Chigi family, nephew of Fabio Chigi, Pope Alexander VII. Born in Rome, he was created cardinal by Pope Benedict XIV in 1753. He built the Villa Cetinale in 1680.