Palazzo Malenchini Alberti is a palace in Florence, Italy. It was owned by the Alberti, who had also a tower nearby. Until the 15th century, their residence was formed by a series of different houses and workshops, which were unified in 1760-1763 by will of Giovan Vincenzo Alberti (1715-1788), a Florentine senator and minister to both Grand-Dukes Francis I and his son Peter Leopold. Later the palace was acquired by the Mori Ubaldini, and a new neo-Renaissance façade was added in 1849–1851. After a short period under a French family, it went to marquess Luigi Malenchini from Livorno, whence the modern name.