Pietro Santi Bartoli (also Sante or Santo; 1635 – 7 November 1700) was an Italian engraver, draughtsman, painter and antiquary.
He moved to Rome in 1635 as a youth, there he studied painting under Jean Lemaire and Poussin, but abandoned it to devote himself entirely to engraving and as an antiquarian for Christina, Queen of Sweden.
He engraved many Roman monuments, publishing in Admiranda Romanorum Antiquitatum (Rome, 1693).
As a draughtsman, Bartoli reproduced the Codice Virgiliano (Rome, Vatican, Bib.
In 1699, with the engraver Domenico de' Rossi, he produced Romanae Magnitudinis Monumenta, a later edition of the 1637 Antiquae Urbis Splendor by Giacomo Lauro.