Quinzio Bongiovanni (or Quinto Buongiovanni) (Tropea c.1550 - Naples 5 June 1612) was an Italian doctor and scholar, active in the disputes between traditional scholasticism and the natural philosophy of Bernardino Telesio, Giambattista della Porta and members of the Accademia dei Lincei.
In 1571 he published the work for which he is principally remembered, Peripateticarum disputationum de principiis naturae (Venice 1571), dedicated to Cardinal Antonio Carafa.
[4] Some time before 1583 he was appointed Protomedico (Chief Physician) to the King (Philip II of Spain), a position which required him to license and regulate all healers, surgeons, midwives and alchemists in the kingdom.
He insisted that apothecaries be prevented from preparing herbal remedies before being properly inspected, otherwise 'they make the compositions up in their own way, without fear of God or justice, and to the detriment of human bodies, which for this reason are daily made to suffer.
[9] Bongiovanni died in Naples on 5 June 1612, bequeathing part of his estate to the two sons of his brother Flaminio, Giovancola and Quinzio (junior).