Santa Caterina d'Alessandria is a Gothic-style Roman Catholic church in Pisa, Tuscany, Italy.
[1] The façade (completed in 1326) has a pointed shape with white and grey marble, with, in the upper section, two order of small Gothic loggias and a central rose window.
Renovated in the 18th century, it houses works by Lippo Memmi (Triumph of St Thomas, 1323), Fra Bartolomeo (Madonna with Sts Peter and Paul, 1511), Santi di Tito, Aurelio Lomi (Martyrdom of St Catherine), Raffaello Vanni, Pietro Dandini (all 16th-17th centuries) and marble sculptures by Andrea Pisano (Tomb of Archbishop Simone Saltarelli, 1343) and his son Nino Pisano ("Annunciation", 1368).
In 1320, Simone Martini painted for this church the Saint Catherine of Alexandria Polyptych, one of his best known works.
The church is flanked by a bell tower with mullioned windows, attributed to Giovanni di Simone.