Marchese Vincenzo Giustiniani (13 September 1564 – 27 December 1637) was an aristocratic Italian banker, art collector and intellectual of the late 16th and early 17th centuries, known today largely for the Giustiniani art collection, assembled at the Palazzo Giustiniani, near the Pantheon, in Rome, and at the family palazzo at Bassano by Vincenzo and his brother, Cardinal Benedetto, and for his patronage of the artist Caravaggio.