San Frediano in Cestello is a Baroque-style, Roman Catholic church in the Oltrarno section of Florence, region of Tuscany, Italy.

The church is dedicated to St Fridianus, an early Christian Irish pilgrim who became bishop of Lucca; putatively he miraculously crossed a swollen Arno river near this spot.

In the former convent of the site lived and died Saint Magdalena de Pazzi (1566–1607), born to a noble Florentine family.

The cloisters contain a statue of St Maria Maddalena de' Pazzi (1726) by Antonio Montauti and a St. Bernard of Clairvaux defeats the devil (1702) by Giuseppe Piamontini (1702).

In the third chapel to the left, is a polychrome wooden Madonna and child (1350) by a follower of Nino, the son of Andrea Pisano, and frescoes of the Scenes from the life of the founder of the Cistercian order (1688–1689) by Pier Dandini.