Palazzo Davanzati is a palace in Florence, Italy. It houses the Museum of the Old Florentine House.

Palazzo Davanzati was erected in the second half of the 14th century by the Davizzi family, who were wealthy members of the wool guild. In 1516 it was sold to the Bartolini and, later that century, to the Davanzati family, also rich merchants (1578), who held it until 1838. After the suicide of Carlo Davanzati, it was split into different quarters and modified. After escaping the numerous demolitions of 19th century Florence, it was bought by Elia Volpi, an antiquarian, who restored It in (his impression of) the original style.