Prato Cathedral is a Roman Catholic cathedral in Prato, Tuscany, Central Italy, from 1954 the seat of the Bishop of Prato, having been previously, from 1653, a cathedral in the Diocese of Pistoia and Prato. It is dedicated to Saint Stephen, the first Christian martyr.
It is one of the most ancient churches in the city, and was already in existence in the 10th century. It was built in several successive stages in the Romanesque style. The church contains a number of notable works of art, in particular fine sculpture.