The Basilica Palladiana is a Renaissance building in the central Piazza dei Signori in Vicenza, north-eastern Italy. The most notable feature of the edifice is the loggia, which shows one of the first examples of what have come to be known as the Palladian window, designed by a young Andrea Palladio, whose work in architecture was to have a significant effect on the field during the Renaissance and later periods.
Since 1994, the Basilica Palladiana, together with other Palladian buildings in and around Vicenza, has been part of the UNESCO World Heritage Site "City of Vicenza and the Palladian Villas of the Veneto".