Andrea del Castagno (c. 1421 – 1457) was an Italian painter from Florence, influenced chiefly by Tommaso Masaccio and Giotto di Bondone. His works include frescoes in Sant'Apollonia in Florence and the painted equestrian monument of Niccolò da Tolentino (1456) in the Cathedral in Florence.. He in turn influenced the Ferrarese school of Cosmè Tura, Francesco del Cossa and Ercole de' Roberti.