Bartolomeo (also Bartolommeo) Borghesi (11 July 1781 – 16 April 1860) was an Italian antiquarian who was a key figure in establishing the science of numismatics.
Having weakened his eyesight by the study of documents of the Middle Ages, he turned his attention to epigraphy and numismatics.
At Rome he arranged and cataloged several collections of coins, amongst them those of the Vatican, a task which he undertook for Pope Pius VII.
His monumental work, Nuovi Frammenti dei Fasti Consolari Capitolini (1818–1820), attracted the attention of the learned world as furnishing positive bases for the chronology of Roman history, while his contributions to Italian archaeological journals established his reputation as a numismatist and antiquarian.
The work was taken up by the Academy of Berlin under the auspices of Theodor Mommsen, and the result was the Corpus Inscriptionum Latinarum.