Petruccio Ubaldini (c.1524 – c.1600) was an Italian (Tuscan) mercenary soldier for Henry VIII (1545–47) and in Edward VI's Scottish war (1549) a calligraphist and illuminator on vellum, who was working in England in the reign of Queen Elizabeth, and seems to have enjoyed the favor of the Court. One of his illuminated books, presented by him to Elizabeth, is in the Bodleian Library, and Walpole gives a list of other works, formerly in the King's Library, and now, most of them, in the British Museum. He was also an author and dedicated his Description of Scotland and the Islands to Sir Christopher Hatton.