Pietro Paolo Cristofari (1685–1743) was a late-Baroque Italian mosaicist active in Rome, and the son of Fabio Cristofari. He became the first director of the Vatican mosaic studio, responsible for decorating the domes and altars in St. Peter's Basilica.F. R. DiFederico, (1983), The Mosaics of Saint Peter's Decorating the New Basilica, University Park: Pennsylvania State University Press, pp. 18; 28–29. Under his leadership he personally made mosaic altarpieces after the paintings of artists such as Giovanni Francesco Romanelli, Guercino, Domenichino, and Nicolas Poussin.
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